I can't say much in regards to Black- you'll want to talk to my buddy Phantom Stranger about that- but W is really damn good. Of course the music alone is reason enough to watch it.
The two big ones are Kamen Rider Super-1 (silver) and Kamen Rider Fourze Cosmic States (blue). The rest, going clockwise:
- Super Blue Beet/Super Blue Beetleborg (Juukou B-Fighter/Big Bad Beetleborgs))
- Sonic the Hedgehog
- TimeBlue/Time Force Blue (Mirai Sentai Timeranger/Power Rangers Time Force)
- Shin/Cye Mouri (Samurai Troopers/Ronin Warriors)
- RX-78NT-1 "ALEX" (Mobile Suit Gundam 0080: War in the Pocket)
- Gali (Bionicle)
- Squirtle
- Tali'Zorah nar Rayya vas Normandy (Mass Effect)
- Shaider (Space Sheriff Shaider)
- Mobius One (Ace Combat 04)