Ok we've opened the floor for the best lets see what people thought were the worst;

AS - Ed
AT_ Ore - I don't like to move it, move it
ccc - much as I hate to say this is Greg's
charleston - it's a close call between the reasonable stab at it from a not great dancer Naga and the abomination that was Ore's where his dancing flaws were only part of what it made it horrible
foxtrot - this is hard because again none were terrible as none were great - Louise's was my least favourite though through sheer aching dullness
jive - Anatasia's horror edges it from the Blackpool not rocks and Will
paso - Ed
QS - Laura for the weird head position, Greg for making a mistake during it, Ore for the gaping and Louise for bugger all content but being the worst is no disagrace in a great year for them
rhumba - sadly the judges's
salsa - not a great year for them but I think this is Ore's
samba - Laura - sorry her fans but was pretty bad although Claudia's messy one runs it close
tango - Melvin's was pretty rubbish but I think Lesley's was really grim - great QS, great charleston but this was lousy
VW - if none were really good, none were really bad either I'll go for Ore's for being content light although that wasn't his fault
Waltz - Naga I vaguely remember she did one early and it sucked

A mixture of least favourites/worst dances for me

American Smooth: Greg & Natalie
Argentine Tango: Ore & Joanne
Cha-Cha-Cha: Greg & Natalie
Charleston: Naga & Pasha
Foxtrot: Claudia & AJ
Jive: Anastacia & Brendan
Paso Doble: Greg & Natalie
Quickstep: Ore & Joanne
Rumba: Judge Rinder & Oksana
Salsa: Anastacia & Brendan
Samba: Judge Rinder & Oksana
Tango: Melvin & Janette
Viennese Waltz: Anastacia & Brendan
Waltz: Ore & Joanne

I tend to gloss over the ones I don't like but I must put Louise and Kevin's samba in as it was dreadful.

Ore's AT was not much better - couldn't stand the OTT facial expressions! Haven't they heard of "less is more"?

there are probably loads of bad ones I've forgotten but here goes

American Smooth
Ed, most of his routines made me smile but him nearly dropping Katya on her head scared me a bit, would have liked to see the look on Neil's face at this moment

Argentine Tango
Louise and Kevin, this was supposed to be the dance where they upped their game but I must have blinked and missed it

Cha Cha Cha
Melvin's was the worst but Naga's was the hardest to watch, she was so uncomfortable

Charleston
Ore, not sure if the dance really was that ugly or if the costumes would make anything look bad, not sure if even Oksana would look good in it

Foxtrot
Louise's, it held my interest long enough for me to wonder why the **** they chose an Amy WInehouse song for a foxtrot but then I got bored. Would so much rather watch an intense foxtrot with mistakes like Danny's

Jive
Laura's jive was the biggest disappointment by not happening. I thought Louise's jive was poor, was so confused when the judges went mad over it, if she wasn't such a nice lady I'd think she was sleeping with them

Paso Doble
Ed's was so bad it wasn't funny

Quickstep
Greg, I didn't mind the dance so much but it didn't really look like a quickstep, even the singers seemed to think it was a jive

Rumba
I got bored during Anastacia's, no chemistry

Salsa
I don't think Will's really worked as a salsa but I also hate the song which won't have helped

Samba
Laura's ankle didn't help but it was Giovanni who really ruined it for me

Tango,
lots to choose from but Tameka, horrible dance, horrible concept and horrible outfitBut in the positive side at least it got rid of her.

Waltz
I suppose Ed's but his was actually half-decent, don't remember any bad waltzes

Viennese Waltz
It probably should have been Rinder's but Oksana's milkmaid outfit saved it so Anastacia's was probably the worst

What? All four of them did a Rumba?..... together?

Kinkeh!

American Smooth: Ed (Just bad in every sense)
Argentine Tango: Ore (None of them were awful, but this one was quite a shitty closer to a good semi final)
Cha-Cha-Cha: Greg (Yeah, this one was crap wasn't it.)
Charleston: Louise (Despite the judges declaring the opposite, a Louise charleston was never going to work)
Foxtrot: Louise (None, too awful but this was dull)
Jive: Claudia (Because it disappointed me more than anything else, I thought she'd kill it, and just edges out Will's which was also a big disappointment)
Paso Doble: Ed (Perhaps the only dance this series which I genuinely believe should have got a one, not a single good thing about it)
Quickstep: Louise (Can't really remember Rinder's that well, but I'm sure it had more content in than this crap, just about another 30/40 seconds in quickstep hold and it wouldn't have been as bad)
Rumba: Judge Rinder (Bless him, but this is all about chemistry and their relationship was far too bizarre to confine to 90 seconds)
Salsa: Judge Rinder (They didn't put much thought into this, by which I mean producers, I'm sure I've watched the gay contestant do a dance to a Spice Girls track nearly every series, just too cliched to be taken seriously at this point)
Samba: Claudia (Forgettable, and too fast for her)
Tango: Ore (WORST TANGO CHOREOGRAPHY EVER)
Viennese Waltz: Danny (Bit boring, and I've never been a fan of this song)
Waltz: Lesley (This makes me feel mean, but her posture was just awful, could have gone for Ore and Joanne, as that was overmarked to the hills)