Only a few of them are really worth playing (this goes for both series).
How can someone not love Jet Grind Radio! Honestly, the Dreamcast had plenty of innovative and fun titles, but consumers have proven time and time again that is not what they are looking for.
I'm obsessed with Dreamcast myself.
IMO percentage-wise DS, Playstation and NES are the worst. Probably about in that order too. Don't get me wrong, the Playstation has probably the best chunk of my favourite games if you count games being rereleased for it, but it has a ton of crap.
The N64 (even though I grew up on this I can understand that it is junk) and Gamecube are both pretty damn weak too. Nintendo's only good console was the SNES.
Also, love all the games bolded, but those are the only titles I could even really play on the NES w/o getting crazy bored. Except for Megaman.
Which is saying almost next to nothing haha but I agree with you. My favourite consoles are probably PS, PS2, Saturn and Dreamcast.
SRW and Disgaea!