Jim and pam after the kiss at the end of season 2, mostly season 3, but it's got a little of season 1 & 2 in there as well. It's all the the song I Stil, by the Backstreet Boys (don't judge too quickly by the band). I hope you enjoy it.
I made this a couple days ago, after watching a production of "Thoroughly Modern Millie", which is where I got the song... it fit so perfectly, I just HAD to use it. :)