Some I can think of at the moment:

Hardline - Love Leads The Way (Japan bonus)
Robby Valentine - Valentines Overture Part I (Japan bonus)
Robby Valentine - Valentines Overture Part II (A Martian On Earth) (Japan bonus)
Def Leppard - She's Too Tough (Adrenalize sp.ed. bonus)
Kharma - Cold As Ice (Japan bonus)
Avantasia - Heart (Moonglow bonus)
Pretty Maids - A Love And A Fiction (Japan bonus)


+ tracks being released as single B-sides and later included on reissues and in box sets:

Bon Jovi - Edge Of A Broken Heart (Always single B-side)
Europe - On Broken Wings (The Final Countdown single B-side)
Ozzy Osbourne - The Whole World's Falling Down (Perry Mason single B-side)