You know, the single major reason I even bought my Turbo Express is because of the Sega arcade ports. I have a Game Gear with Master Gear converter (lets you play Master system carts) and the SMS versions of Shinobi, Space Harrier, and Outrun (couldn't stand SMS Afterburner) were some of my most played portable games, even though I have a DS with tons of stuff on it too.
The Sega ports, although not 100% arcade perfect, were the best of their time and make for some of the best portable fun there is. I personally find it hilarious that no Sega system had better ports until the 32-bit systems arrived.
As a side note-I FINALLY beat Shinobi (PCE version) for the first time today! *ninja backflip!* I had beaten the SMS version before, but it's not really the same game, and I'd never gotten close in the arcade.
*edit* I think this thread has been officially hijacked, I forgot that it was originally about the Famicom Bonk
