The SCD Preview really showed up Alesha well. She's positive, curvy and looks good with Matt Cutler. Seems to have a lot of fun doing their rhumba training. 'Oooo Matthew!' she gushed when Matt made her bend backwards. Truly funny!
Another couple I would like to see doing well would be Flavia and Matt the actor. Their onscreen chemistry is unmistakable - they really seem to like each other's company so far...
Penny and Ian. Penny looks like she can swing her hips really well.
Gabby, though I hate to admit, does look really good with her ballroom posture with James and they seem to have already nailed their quickstep. I think this is an amazing achievement. Whether I like her or not I think she does seem to have the ability.
As for her husband, I think he looks rather robotic. Don't know how the judges are going to pan him actually... Maybe he'll be like Matt Dawson - a slow starter but shone towards the end. One only hopes he can last that long...
Dominic and Lilia look like a fun pair too. He's self-deprecating but admitted at being competitive and may resort to cheating to win (tongue-in-cheek), but I think Lilia's excellent choreography will help him along to week five at least...
Stephanie looked classy and has a dry sense of humour. Vincent looked a little like the rabbit caught in the red light in her presence but seems to be very caring towards her. Must be the Italian blood in him... 'Basically I can teach anything that moves'... That straight-away broke the ice between them... I will hate to see them go, but I can't imagine her doing jive TBH...
As for the rest of the celebs/pros: Brian's training looked worrying to me. And I didn't see any of Willie's actual dancing in his training footage. Letitia looks like she's going to be fragile (I hope she would not turn out to be like Jan I-Hope-You-Are-Happy Ravens).
The only thing I saw of Gethin was his falling out of the frame!

Can't say much from that, but I am sure a lot of girls and ladies will be voting for him, never-mind if he has two or three left feet...
Kate and Kelly have very distracting assets bouncing in front of them. Well, to be very honest I didn't see any training footage of Kelly to even comment (though there were a lot of interview footage of her). All I can say is she's a very bad actress (!) from the VT of whatever clip they've shown of her. Kate didn't seem very comfortable in her training but I hope to see more of her and Anton especially in their ballroom dances.
John Barnes talks a lot and seem to be able to do some 'rap', but can he dance? Will he be like Peter Schmichael? He looked a little hunched when doing the cha cha cha moves with Nicole but I wish him well.
Who else did I miss?