My favorite is definitely Round Round I think the video was brilliant.
http://www.youtube.com/watch?v=FHh86ySgKrA

'Too Lost in You'

In the Middle and Red Dress seem to be underrated, love both of those

Honourable mentions to About a Girl, Caught in a Moment, Hole in the Head, Round Round and Overload... their singles discography is just brilliiant!

Sugarbabs 1.0 .. Overload
Sugarbabs 2.0 .. Round Round
Sugarbabs 3.0 .. Change
Sugarbabs 4.0 .. Stopped listening prefer new MKS so far

This is too hard!

My top ones are
1. Too Lost In You
2. About You Now
3. Ace Reject (I know it was never released as a single but I still love that song)

I love that song!

lolz!! happy mem'ries

round, round
hole in the head
and
push the button

In The Middle, Red Dress, About You Now, No Can Do

Glad to see lots of (deserved) love for Red Dress! Freak Like Me is probably their best imo though, Ugly would complete the top 3.

Funny how you forget this group(s) have had 6 number 1's , 7 if you include the christmas one. So successful but because of the line up changes and their focus on music rather than celebrity (early days) they are overlooked.

Run for cover and Freak like me are my favourites. They've had lots of brilliant ones though, it's crazy.

1. Run for cover
2. Freak like me
3. Denial
4. Red dress
5. Push the button/About you now

My top 3

Ugly
Get Sexy
About You Now