Top 10 Chemical Songs
1 Anything by "The Chemical Brothers" or "My Chemical Romance"
2 Careless Whisper - George Michael (price reporting)
3 Rumours - Fleetwood Mac (more price reporting)
4 Killing me Softly - The Fugees (chemicals - just joking guys!)
5 It's Now or Never - Elvis Presley (last chance for a price hike)
6 The Carnival is Over - The Seekers (recession)
7 Stuck inside of Mobile (with the Memphis Blues again) - Bob Dylan (this one for Tobias with his phenol plant in Mobile)
8 N E C A (to the tune of YMCA - Village People)
9 Can we fix it? - Bob the Builder
10 Fake Plastic Trees - Radiohead
And more suggestions in readers' comments:
Polyethylene - Radiohead
Polythene Pam - Beatles
Plastic Fantastic Lover - Jefferson Airplane
Toxic - Britney Spears (MTBE)
I Can't Drive 55 - Sammy Hagar (ethanol)
Wipeout - The Ventures (US economy)
Thanks for the Memories - Fall Out Boy (cheap crude)
All Mixed Up - 311 (the US presidential run)
Push It - Salt 'N Pepa (green chemical industry)

This is so great
Stuff's comment links to an organic chemistry-themed music video parodying Robert Palmer's 1985 "Addicted to Love" - it's very good. In the YouTube "related videos" see also "Good Will Hunting piano organic chemistry".
forgot to mention, for your collection, Rod Stewart's mega-anthem "I am Xylene...I am Xylene...home again...cross the sea."