The other thing the songs happen to have in common is that while I enjoy each one greatly, I'm not really interested in the remainder of the artists' catalogs. For Fitz and the Tantrums (great name) the entire album seems to be about being spurned by women, and it only takes a couple of those before it just sounds whiny. For Foster the People, the rest of their stuff simply doesn't seem to be up to the quality of the song above. Of course, give both the artists a fair listen for yourself if you like their stuff above.
Hope you enjoy! :)