My Wapped Dreamscape

I put this dream down to the fact that I've been listening to the Doctor Who Big Finish audio plays. It was more like watching an episode as the action was taking place arround me with my taking no active role.
It started with the 7th Doctor having to sort out something, this he managed but there were further complications, at this point the 3rd Doctor cam in to help and I was awaire that he was not being played Jon Pertwee but a lookalike, though I thought it didn't matter as people would only be hearing him. He stated the he'd need more help and from outside I saw Tom Baker walking towards us all with Elizabeth Slayden, as he walked he kept shifting from how he looks now to how he looked when he played the 4th Doctor. At this point I woke up.