The Final Frontier by dolimir_k Because it's a really cool take on Hobbes' end of things and exactly the sort of thing he and Calvin would do with their lives.
Stupendous Man and Pretty Cool Dude (for an old guy) by mjules Because Calvin's Uncle Max is married to a Pretty Cool Dude (for an old guy).
"And the occupy Wall Street movement" by 404notfound Because, while not the most fantastic prose, it's an episode I really wish 2 Broke Girls had actually done.