Caveman fall into the category of the more library-friendly indie rock acts like Bon Iver, who work in more subtle, hushed tones, so if you generally enjoy music played by bearded guys in collared shirts or miss when the Shins weren't quite so noisy, you'll probably like the Brooklyn-based (of course) band quite a bit.
I realize that description doesn't really make it seem like I like the band's music, but I actually do. It's not really exciting stuff, although the up-front drum sound does separate them from bands like Fleet Foxes that generally put me to sleep, but their music is generally quite beautiful and charming. Listen/watch their video for "Easy Water" above and check out the band at Club Congress on April 28th. Tickets are $5 in advance.