It's impossible not to feel happy when the beginning of Len's 1999 hit Steal My Sunshine comes on. That's always a good characteristic for a song to have. The track was featured in the film Go from the same year. Quick sidebar--Go is a highly underrated movie that's much more intelligent than it looks.
Len's third album You Can't Stop the Bum Rush (pictured) had one other solid single, Feelin' Alright, but was mostly a disappointment considering the catchy-ness of their first (and only) hit.