Vince Vaughn is one brave man. The “Wedding Crashers” star is teaming up with Glenn Beck to produce a reality show for Beck’s GBTV network, reports The Post’s Richard Johnson. “Pursuit of Truth” is a competition between 20 documentary makers to win financing and distribution of their film. Vaughn — who supported Ron Paul for president in both 2008 and this year — is partners in the venture with Peter Billingsley, the director who played Ralphie in the 1983 classic film “A Christmas Story.” Conservative bloggers are praising Vaughn for courageously not hiding his libertarian political views even though it could cost him in ultra-leftist Hollywood, where outliers get blacklisted.