I would say 1963, but that was also the largest class inducted.
The '63 class featured George Halas, Don Hutson, Bronko Nagurski, Jim Thorpe, and Sammy Baugh just to name a few. But like I said that's an easy pick.
1971 was also a beast class featuring; Jim Brown, Vince Lombardi, Y.A. Tittle...
http://www.sportzin.com/blog/?p=722
I don't know about the "Pro Bowl" but we'll see.
I think Kubiak needs to worry about getting that team to the Playoffs before anything else.
1. Saints - Pretty obvious here, they won the Superbowl and re-signed most of the key players on that team.
2. Vikings - As much as I hate Adrian Peterson, they don't need Favre to win. That defense is ferocious and just added a great young DB in Chris Cook, also the Heisman finalist may help...