I don't know that they give out 1500 tickets for a regular taping, but they definitely distribute more than the ~330 capacity for the studio. I didn't think CBS distributed 'stand-by' tickets before taping; rather, that was something that was handed out on taping day. By my understanding (please someone correct me if I'm wrong), the stand-by tickets are only honored after everyone with a regular ticket shows up and is processed. With June 6th being Bob's last show and your having a stand-by ticket, I wouldn't get my hopes up on getting in to the studio...
And for tickets on Craig's List, eBay or others: TPiR tickets are supposed to be free. Paying several hundred dollars for a free ticket on the chance that you might see Bob.... I love Bob and the show, but not that much.
Edit: I just saw the announcement on the front page about stand-by e-tickets. After reading that, it seems all the paper tickets will go first. Still seems like a longshot, but give it a try if you're up to it. If you've got an e-ticket, you'll probably want to be in line very early so you can be at the front of the e-ticket group, just in case they go to stand-by tickets. Good luck.
