I don't mind Sella's climbing, it's kind of funny. I actually rather like Bernhard Kohl's "nodding dog" style of climbing. Cadel Evans' style when he gets out of the saddle is horrible though, mainly because he chucks the bike from side to side so far it looks like he's trying to throw it at the rider next to him.
Contador's TT annoys me cos of the constant shuffling himself backwards.
Soler's style is horrendous, and it's fitting that he borrowed Escartín's nickname of "The Crab" for his awkward, sideways style. Incredibly effective, just not very stylish-looking.
Nuno Ribeiro has one of the best climbing styles in recent memory, very efficient and smooth looking. When you watch him and Cabreira climbing together in '09, it really looks like Cabreira is putting in twice the amount of effort that Ribeiro is putting in, must be so much wasted energy in comparison.
Fränk Schleck looks graceful going uphill but awkward going downhill. Ivan Basso looks dreadful going downhill. Nibali, Savoldelli, both Sánchezes and Valverde all look fantastic going downhill, plus there's that footage of Cancellara chasing back on on the descent in the '09 Tour and Arroyo's famous chase in the maglia rosa.