Via THR’s the live feed:
…[T]his year there are three “Chuck” posters hitting San Diego — the official Warner Bros. design, the winner of a contest where fans created their own “Chuck” posters, and the runner-up in the fan contest.
Click the banner above to see all three posters in full.
Chuck‘s Comic-Con panel takes place this Saturday at 10:00 a.m. Season four premieres on NBC on Monday, September 20, 2010.