I hadn't really thought it that this is the first time Green Bay Packers WR Greg Jennings has actually played in a Pro Bowl. He made it last season, but he went onto play in the Super Bowl instead. Has he been overlooked in the past?
I think the short answer is: no. While he was good enough in 2007, he was the 3rd best WR in the NFC according to Football Outsiders, it's understandable that he was overlooked in his breakout season. He was on the bubble in 2008 and 2009. He was good, but his touchdown receptions dropped (12 in 2007, 13 in 2008 and 2009 combined) and that was probably enough to keep him home. His numbers dipped slightly in 2011, but he also missed 3 games.
Looking back over his past five seasons, they've actually been remarkably consistent. There's an argument to be made that he didn't deserve it this season, but he was ranked about the same in 2011 by Football Outsiders as he was in 2008 and 2009, so he was probably snubbed in one of those years. And in the end, what does it matter. It's just a good time for the players, and a headache for the teams because the players will now ask for more money according to Andrew Brandt.