Random awesome things about Utopia in no particular order...
The Master locked the Doctor out of the TARDIS by puttting the latch on!
"Oh she was blonde!"
Derek Jacobi
The Doctor and Jack bonding over Rose being alive
The conversation in the radiation chamber
The Doctor did leave Jack! (not awesome as such but it means I was right)
Although my inner Ianto fangirl was a little miffed that Jack didn't appear to be missing Ianto at all, she loved Jack's 'Ianto moment' where he took the Doctor's coat and the Doctor gave him a 'what are you doing?' look.
Martha's insecurities about Rose
The Doctor tellig Jack off for flirting
Martha's reaction to finding the hand
Jack sniping at the Doctor for leaving him
That the Doctor left Jack because Jack is something new and he's kinda scared of him now.
And probably loads more...
*dissovles into puddle of squee*