Best Misuse of Time Travel?

Pretend you could borrow the TARDIS for a day, how would you abuse time travel?    joonscribble mentioned here about  going and picking up TW S2 DVDs to be able to watch them all at once, right now, which is just all kinds of inspiredness. 

Personally, I'd consider visiting this mom and pop bakery that made the best donuts before it closed a few years ago.  What would you do?

And no "I'd kill Hitler before he could rise to power" type of answers please, yeah preventing WWII would be great, as would any other heroic adventure you could go on... but let's be realistic here, wouldn't you rather be backstage during the filming of John Barrowman's defabricator scene?

Telepathic Talks

Title: Telepathic Talks
Pairing/Warning/Rating: none, rated G
Word Count: 1741
Summary: A disaster brings the Doctor closer to Jack
Author's Note: Written for _medley_. Now with art!!!   Commentary!! and a coda: Throwing the Pebble

( It was barely there, like a half-heard whisper, something you acknowledge without knowing why...  )