JSA
JLA
Green Arrow
Hawkman
Green Lantern: Rebirth
Superman/Batman
Legion of Super Heroes
Flash

All good stuff!

JSA, Teen Titans, Outsiders, Green Lantern: Rebirth (and soon the new Green Lantern), Justice (whenever it starts) and I'd recommend the Flash, too (although I've not started buying issues yet, maybe I'll just buy the paperbacks). Basically anything by Geoff Jones and Alex Ross equal absolute heaven.

JSA (consistently good)
Teen Titans (great art)
Outsiders (great characters...we need a Grace Heroclix Fig)
The Flash (one of my all time favorite superheroes)

JSA (great stories, consistent art, tho I miss Sadowski/Bair!!!)
JLA (and its derivative serieseses)
Green Lantern (anything -- great hero, all-time fave)
Teen Titans (another fave from childhood; great art, too!)
Outsiders (good, but I'm considering dropping this one...)
LoSH (one of the most fun comics ever...!)
Superman/Batman (great writer, great artists, great charcters, great book!)
Action Comics/Adventures of Superman/Superman (really good right now...)
Space Ghost & Adam Strange (two of the best mini-series around!)
The Ultimates (my one Marvel vice)
D'oh! I forgot The Flash!

JSA
Green Arrow
Legion of Super Heroes
GL: Rebirth

JSA - best superhero group comic going
Flash - best single character comic
Rebirth
Plastic Man
Fables
Can't Believe its Not the JLA
Batman/Superman

Adding Villains United, Countdown (read 1st issue (preview copy)), new Crisis stuff

Marvel for me is down to Ultimates 2
I collect more Bongo than Marvel!

JSA (trades only)
Batman/Superman (trade only)
Teen Titans (Trades)
Outsiders (Trades)
Most Limited Series (Deadshot, GL Rebirth, Identity or whatever Crisis comes up)
Legion Of Super Heroes (Empire sold me on Waid & Kitson)

I'm sure I'll check out the All-Star Series