[quote=BrobyDDark]
Goku shoots him and as he is regenerating shoots him again. Or anyone actually. We've already established that pretty much every universe's forces are enough to destroy whole galaxies i seconds. Besides, The Doctor would run out of regeneration's eventually.
[/quote]

And for Goku to come back you need the 7 dragon balls.
Plus, your assuming the Doctor would allow Goku to face him in head on combat.

Ha ha... Ha ha... That's cute.