Ingratiating comedy-drama that tracks several characters as they dance, talk, love, and, uh, "groove" the night away at a warehouse rave. Serving mostly as a rave primer for the uninitiated, Groove often cuts back to the audience's surrogate character, a dorky newbie (Hamish Linklater) who is discovering everything for the first time: ecstasy, electronic dance music, and of course cliched… read more!