If you're looking for manga similar to 4-Koma Gekijou!!, you might like these titles.
Official anthology by various artists, based on Daily Lives of Highschool Boys.
There's even more to be told of the antics of the SOS Brigade--under Haruhi's leadership the possibilities for fun and mayhem are endless! Jam-packed with more time travelers, aliens, espers, and Haruhi than Kyon can handle, this anthology is the perfect addition to any collection!