Blink and you'll miss it, but in the orgy section of "Rejected SWS Ideas", Elisa's head is on his chest and he's contentedly stroking her hair.
Bit of an odd one, but in the Doctor Dolittle Review he gains the ability to speak to appliances goes out to try it out. He is then told off by an air conditioner and the do not cross sign. The heartwarming moment is when he returns to his apartment. His coffee maker, toaster, blender, and crockpot greet him as he enters:
Appliances: We still love you.
Paw: *Thumbs up* Thanks, guys.
The Channel Awesome Dance Extravaganza 4! Its a lot of fun seeing these guys have a lot of fun and the fact they all manged to do it together and made an entertaining video of them each dancing funny. Paw did the same thing for the 2nd and 3rd anniversary specials.
Paul and Elisa are engaged. The sheer d'awwww is overwhelming.