Jaane Kyun from Dostana. This song has this lovely, happy feel to it. It's pretty similar in theme to one of my (and possibly a lot of other people's) all-time favourites, I'll Be There For You by The Rembrandts. The basic idea that it sends across is that, no matter how much things go wrong, if you have a few good friends surrounding you, it'll all be quite okay. I like this idea. I love the general feeling that this song evokes.
Chote chote kuch palon ka dostana yeh
Jaane kyun ab lag raha hai jaana maana yeh
Coz when smile for me
The world seems all right
Yeh saare pal yahin
Yun hi tham se jaaye