I almost didn't click on this thread because I thought it was going to be, "Look what I found while I was a passenger on a 747!" Instead it was LITERALLY the Discovery on a 747!
Really, really cool! The closest I came was having Air Force One fly overhead on 9/11 on its way to the Air Force base here in Omaha. It was the first and only plane in the air for DAYS and was freaky to see.
By the shape of the tail, looks like that's a T-38 escorting it. I believe they always use those on the piggy back shuttle flights to monitor the shuttle/747 for any in flight issues.
Cool to see the shuttles flying one last time. It's a shame the cost has caught up with NASA in light of recent economic times. Wonder if this is how it felt at the end of the 60's when no one was sure when we'd be going places again. I think the private sector is probably the biggest future for space. But it's still kind of a shame to me :/ The shuttle has been going into orbit since I was 4 years old, and now it's gone.