I love REM's Shiny Happy People and The Monkees. I think my favourite of theirs is Take A Giant Step.
Other favourites are:-
Knock On Wood by Amii Stewart.
Video Killed The Radio Star by The Buggles.
Rock The Casbah by The Clash.
Unbelievable by EMF.
Stacey's Mom by Fountains Of Wayne.
Molly Smiles by Jesse Spencer.
Wimmin by Ashley Hamilton.
And mostly anything by ABBA.
Any of these songs give me a silly, happy feeling and some of them even have me laughing out loud, dancing, and singing along at the top of my voice.
Much to the embarassment of my kids.
Probably not a good idea to listen to them if I was driving though.