sterolab are nice/happy/french style of yo la tengo... more lush than guitars.
Galaxie 500, Sparklehorse, Grandaddy are all great - grandaddy being one of my fav bans ever - check them out!
yo la tengo do indeed cover quite a few styles, from sonic youth type guitar music, to Low type slow songs to camera obscura twee....
one of the reasons they are so great is their range i think