According to the blastr website, Tom Baker is returning for Doctor Who's big whopping 50th-anniversary bash next year! He should come back and do it again full-time, let alone the 50th-anniversary special! lol Here's the link anyway http://blastr.com/2012/07/tom-baker-will-return-for.php
It will be nice to see him back as the Doctor..., originally I believe they wanted Christopher & David back along with Matt for the 50th special BUT Christopher said no so I guess they had to come up with a new idea. :)
I love Tom but I don't know if I would like to see him back in it. For the 50th I would honestly love to see Russell Enoch in the anniversary episode. I think it would be a lovely touch.