I still haven’t seen Walk Hard: The Dewey Cox Story, but it does look pretty funny, and so when I got an invitation to a special one-night performance event for the film at The Roxy, I couldn’t pass it up. Actor John C. Reilly is kicking off a two-week “Cox Across America” tour as his film’s alter-ego, the legendary Dewey Cox, and it all started tonight at a loud, festive and fun event. Open bar, appetizers and funny music – …