This site and the whole DCEmu Network came about from a love of the Dreamcast and the first mainstream Homebrew community that came about because of it, the commercial scene may have died years ago but the Homebrew Community lives on
The Dreamcast has a massive amount of Emulators for it from the likes of Spectrum to Snes and even Bleemcast which was a Commercial Playstation Emulator for the Dreamcast which gave better performance and updated graphics than the Playstation itself did.
Over the last few years has seen the release of Emuforge which was a massive collection of games released for the Dreamcast all done in a retro style.
No matter what your looking for the Dreamcast has it covered from Homebrew Games to Software like ScummVM/FrotzDC which allows you to play all those old point and click games.
Remember that the Dreamcast apart from some late models is totally homebrew friendly, if your a fan of emulation and homebrew and dont want to spend a lot of cash then relive one of the greatest consoles that did better with homebrew than commercially.