The only team that was great as a whole was Sky. Liquigas was good but only really Sagan and Nibali + Basso for 2 days did something. Lotto was great too with Greipel and VdB, also kudos to the guys in Greipel's leadout. Europcar was awesome too but like Liquigas they were a two man team. FDJ was one of the better teams too, they leave with 2 stage wins and possibly a TOP-10. Besides Fedrigo and Pinot, Casar was very visible in breaks. Hutarovich was a disappointment though.
Hard to choose the worst team as there were many who didn't do anything worth mentioning, but maybe I have to go with Cofidis. I'm a fan of every French rider and French team but I have to say I hope Cofidis either changes dramatically or stops getting invited to big races. They really bring nothing to the big races anymore. Taaramae will likely leave and Moncoutie retires, at least David will put on a good last show for us in the Vuelta. Of course they could've been good if Taaramae hadn't had his problems earlier in the season and Moncoutie could've shown himself in the Pyrenees. Also the problems with Di Gregorio make their Tour even worse.
For personal reasons I have to add Saxo on the worst teams list. They gave me so much misery with CAS. That guy just looks so ugly on the bike. Hands down the second ugliest thing I've seen on my TV screen, only second to Tora Berger on skis. And of course he's in every break in the mountains and I'm forced to watch him ride for hours.