You've had that moment, you hear a tune and can't place it. It's even worse if it's an instrumental song, because there's no hope of you remembering some words and googling them. Well in 2010, apparently there's a plethora of solutions. I'm still behind the times so needed a solution that didn't require a smartphone or super cool mp3 player, so no Shazam apps. Still, there are solutions out there. The first thing we tried was midomi. The idea is great, hum a tune, and it'll try match what you hummed to tunes other people have entered. Didn't work so great for us though. So I hummed and my guitar playing friend picked out the notes using his guitar and wrote them down. I meanwhile found another site, musipedia, which appealed to the musician in me. This site has several ways of finding tunes, one of which is playing the notes on an on-screen keyboard. It took just a couple seconds of me entering a dozen notes or so, and I had my answer. (If you're curious, the bugger of a song was Minuet for Harpsichord by J.S. Bach.)

What's your favorite way to identify songs stuck in your head? For more suggestions, here are some articles I found:
http://www.wikihow.com/Identify-Songs-Using-Melody
http://www.labnol.org/internet/find-name-of-songs/12316/