Which PS2 emulators are confirmed knowledge? (And I don't mean PS2 on PC...)

klutzon

My brother recently downloaded a Master System emulator for the PS2, where he put on 30 or so ROMS (10 didn't work) together with the program onto a CD that booted on the PS2 and let him play his Master System games.

If anyone can tell me which other emulators for the PS2 have been confirmed to be at least under construction, can you please list them here and their respective web links?

NES emulator?
SNES emulator?
Genesis emulator?
*gulp*... N64 emulator?

Let me know, so I know what to look forward to. Personally, I'm waiting to get my hands on a Genesis emulator, I've got so many games that I'd love to play on the console. The SNES emulator comes next in priority.