Just a few thoughts:
1. Thierry Henry (full disclosure: he's been one of my all-time man crushes for years, maybe my favorite footballer) did not cheat. Fixing games is cheating. The flopping that is rampant in the game now is, if not outright cheating, awfully close. The play was the result of split-second instinct (while tip-toeing the end line at full sprint), not cheating. Refs are supposed to call handballs. This isn't a backyard "call your own foul" game. There were also two French players offsides on the play. If Henry was "cheating," so were they. The refs blew it. It happens (and I'm not above griping about it).
2. You don't replay World Cup qualifiers. That makes a mockery of FIFA and sets a terrible precedent that will only lead to griping from every fan who thinks their team should've won (which means every fan) in hopes that they too might get their deus ex machina "do-over."
3. The Irish legend himself, Roy Keane, summarized it well in his interview. His take: Ireland probably didn't deserve to win, they're playing the victim now and blowing the handball out of proportion:
Of course [Henry] handled it...but I'd be mad at my defenders. There's only one ball; put a head on it. How can you let the ball bounce in the six-yard box from a free kick just inside the halfway line?Here's Keane's full interview, a reminder that no one does "angry" better than the Irish (just wait until one of the reports' cell phones goes off -- classic Keane)...