The Energon Pub

All the original U.S. G1 Opening Themes Plus Two Alternate ones.

Season 1
http://www.youtube.com/watch?v=djkklF5msv4

Season 2
http://www.youtube.com/watch?v=qk0uy79NOD0

Season 3
http://www.youtube.com/watch?v=8779B6PegPc

Season 4
http://www.youtube.com/watch?v=OeTcg-VVM2I

Season 2 (Alternate Opening)
http://www.youtube.com/watch?v=el82zieF3gY

Season 3 (Alternate Opening)
http://www.youtube.com/watch?v=XRPaoTmurYc

Your missing one.Its been called the season 5 opener by fans but it was really a just the same episodes with a puppet Powermaster Optimus Prime telling the stories to a blond boy named Tommy.That season had a different opening theme.

Wish I could find it on youtube for you.