Well, Bleem were a bunch of liars and theives, ill give you that. However I always liked the idea of playing playstation on my Dreamcast with better grafics. It helped me to brag to all the PSX fans about how what they had I could get and get it better then they could on their system. Now that Bleem is gone however, I just tell the people I know, that don't own the system, about how they can play NES, SNES etc. on the DC.
Anyways, on to the reason why playing emu's on DC is such a "Big deal". Before I found out about DC being able to play games from other systems, I hated using emu's. I would never use them, this was simply because it is my belief that the only way to truly enjoy a console game was to play it on a console and not a PC. I was never able to get used to playing console games with a keyboard, and computer controlers are just too different then those on consoles,because of this I would rather spend $50+ for a game that was 10 years old then play a free copy on a PC. However, once I found out about the dreamcasts abilitys to play classics, I went out within two weeks time and bought one for myself. I now PREFER to play old games on my dreamcast for numerous reasons, for example: If I want to play NES games I can eather play them on one of my original Nintendo systems and have to constantly worry about A. My saved games/scores getting erased B.Mid way through the game the blinking light problem occurs, or C. Someone trips over the controler cord or something and the system freezes. With the Dreamcast I don't have to worry about such problems, and the program I use for NES (NesterDC version 4) Works better with the games then the original sytem does.
So why should I go out and spend money on games that the company doesn't make money on anymore, wich are less reliable then copies, and take long times to find or complete a transaction for via real life or ebay? Emulators are a beautiful thing, its just the Dreamcast makes them that much more like playing the games the way they were ment to be played.
I belive I have explained well enough why emu's on DC are so looked forward to, and while I could go into greator detail, I belive I have rambled long enough.