1. Greg Rucka
Rucka had an amazing run on Wonder Woman. He's one of the few writer who actually understands her potential.
2. Grant Morrison
Morrison is the reason I returned to comics oh so long ago! His run on New X-Men is possibly my favorite run ever. He likes to go outside of the box and doesn't care if it is frowned upon. His WE3 is a great read too!
3. Tom DeFalco
DeFalco created the MC2 universe and has written every Spider-Girl issue to date. His writing is a lighter tone (but still one that makes an impact) which is a great contrast to some of his heavier peers.
4. Geoff Johns
Johns seems to be to DC what Superman is to the JLA. He had a wonderful run on Teen Titans and garnered my interest in Flash and Green lantern.
5. Peter David
I loved Young Justice! David brought a lighter tone (somewhat similar to DeFalco) that made a fun read.
6. Gail Simone
Simone's run on Birds of Prey is noteworthy. She seems to have a great understanding of the characters and appreciation for the fans.
7. Brian Michael Bendis
Bendis co-created a great thing with the Ultimate Universe.
8. Will Pfeifer
Pfeifer's Catwoman was a great read. I was never a huge fan of the character, but his work definitely changed that.
9. Marv Wolfman
Wolfman made a lasting impact on the Teen Titans and created several characters that continue to be important in the DCU.
10. Art Baltazar
Who would've thought a simple family friendly comic could be so fun?! Baltazar co-writes and draws Tiny Titans.