AP: PORTLAND, Ore. — Thousands of people who learned through text message, Twitter and word-of-mouth that comedian Dave Chappelle would hold a free show filled a downtown Portland square late Tuesday and early Wednesday.

Chappelle arrived at about 1 a.m. to a surge of camera phone-wielding fans. There was only problem – a small amplifier left the comic inaudible to most.

It's not clear why Chappelle was in Portland, and what led him to Pioneer Courthouse Square.

"I'm not here...