Jean-Claude Van Damme, Doc Brown (or his young companion, Marty McFly) or something, it's pretty much been a crapshoot for most of us human beings. The only other possible option has been to meet The Doctor.
A more realistic alternative than trying to track that dude down is to play Doctor Who: The Adventure Games and BBC has announced that the upcoming third episode -- due to launch on August 27, but only available to UK residents -- will give players an intimate look behind the blue doors of the TARDIS and even let them pilot it. For the unaware, the TARDIS is the it's-a-police-box-but-not-really structure that allows The Doctor and his companion to traipse through time and space. So it would seem that next week Einstein-Rosen Bridge enthusiasts will finally have a viable fix!
Now if only we could fast-forward to next week. Jean-Claude, if you're reading this, would you mind helping us out?