Fave Obama nicks

1. "Ear Leader"

2. "President Toonces"

3. "President Shortpants"

Not sure where I first read any of them.

Update: 4. "Messiah in Chief" (h/t jwp). At least our side attempts a little humor, unlike the "Bu$hitler" types.

5. "The Won" (h/t Sherm). Should, of course, be "Teh Won."