I had the same itch a couple years back...
fortunately my library (and dad's personal collection) were fairly well stocked. A few things I got pretty into were:
Daredevil stuff by Frank Miller.
Green Lantern + Green Arrow. Don't know how long they teamed up, but the small collection I read was cool.
Punisher War Zone. The first 18/19 issues drawn by the fantastic John Romita Jr. (who did Kick-Ass)
G.I. Joe. Decent & fun military fantasy, by Larry Hama who wrote most of the classic mythology.
The Avengers. Again, I have a couple collections of the first era. Classic Marvel foundations and good to catch up on for the upcoming movie.
I've been an on & off collector most of my life, but these are just some off the top of my head.