Here's what I think:
MONSTERS:
Effect Veiler
Maxx "C"
Gorz the Emissary of Darkness
Black Luster Soldier - Envoy of the Beginning (if you're running LIGHT and DARK monsters)
Thunder King Rai-Oh (or is he Semi-staple)
Tour Guide of the Underworld (TCG ONLY)
SPELLS:
Pot of Duality
Heavy Storm
Monster Reborn
Dark Hole
Book of Moon
Mystical Space Typhoon
Mind Control
Limiter Removal (Machine Decks only)
Allure of Darkness (DARK decks)
TRAPS:
Solemn Judgment
Solemn Warning
Mirror Force
Torrential Tribute
Trap Dustshoot
EXTRA:
Stardust Dragon
Brionac, Dragon of the ice barrier
Black Rose Dragon
Trishula, Dragon of the Ice Barrier
T.G. Hyper Librarian
Scrap Dragon
Leviair the Sea Dragon
No. 39 Utopia
Steelswarm Roach
No. 17 Leviathan Dragon
Ha! Am I focusing on the TCG format? HMMMMMM......maybe? xD