I just got my PC back, so I have to re-do them all, but I'm going to do, original, X, Battle Network (apparently I'm the only dude on the face of the planet who likes this series the most).
Megaman
Cutman Stage
Fireman Stage
Wily Stages 1
Megaman 2
Metalman Stage
Bubbleman Stage
Password
Wily Stages 1
Epilogue
Megaman 3
Title Theme
Magnetman Stage
Snakeman Stage
Got Weapon
Ending - Theme of Blues (minus the ear piercing shriek *pops 3 Excedrin*)
Megaman 4
Ringman Stage
Dustman Stage
Epilogue
Megaman 5
Stoneman Stage
Napalmman Stage
Password
Blues Stages (Barely makes this list)
Megaman 6
Tomahawk Stage
Windman Stage (this needs a piano arrangement)
Megaman 7 Some songs in this are from Super Ghouls 'N Goblins
Opening Stage - Ruined Streets
Friend or Foe? - Theme of Forte
Burstman Stage - Medical Science Lab
Slashman Stage - Jurrassic Jungle
Ending - A Hero Returns
Megaman 8 (I only wish I had a clip of Jump, Jump, Slide, Slide)
Stage Select
Frostman Stage
Aquaman Stage
Wily Stage 2
Megaman X
Highway - Opening Stage
Snowy Field - Icy Penguigo Stage
Airport 1001 - Storm Eagleed Stage
Stage Clear (sweet salvation)
Sigma Stage 1
Cast
Megaman X2
Repliroid Factory
central Computer - Magne Hyakukegger Stagege
Counter Hunter Stage
Megaman X3
Irregular Hunter HQ - Intro Stage
Theme of Zero
Airport - Gravity Beetbood Stage
Water Surveillance - Acid Seaforce Stage
Ending
Battle Network
Main Theme
Boundless Network
End Roll
Battle Network 2
Main Theme (probably the best main theme in the series)
Vicinity of Sorrow
Proof of Courage
Time Limit
And You Will Know the Truth
Battle Spirit
VS. Gospel
Battle Network 3
Main Theme
Wiping Tears
Proof of Courage
Final Transmission
Great Battlers
Battle Network 4 (It's like they tried to make it suck)
Battle Pressure
Battle With Myself
Your Answer
Battle Network 4.5 (I like how they re-did old stage themes, it's too bad they picked bad stages)
Theme of Windman
Theme of Metalman
Theme of Blues (<3)
Metal Shooting
Battle Network 5
Battle Start!
Liberate Mission
A Total War
VS. Nebula Gray
I'll do the X series tommorow.