For my money, Tetris is the best video game ever made and I made a board and set of pieces based on the game.

The set can be downloaded here:
http://host-a.net/dpa09/NagaSkaki_Tetris.rar

Here is a screenshot:
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs015.snc4/34098_10150220647285534_873120533_13456384_6516505_n.jpg

As an aside, if you have a Nintendo DS, are a fan of Tetris and don't have a copy already, I recommend you buy yourself Tetris Party Deluxe - it's pretty damn fun.

Made a medieval themed chess set which can be downloaded here:

http://host-a.net/dpa09/NagaSkaki_Medieval.rar

Here is a link to a screenshot:

http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs101.snc4/35415_10150216966945534_873120533_13350604_5171748_n.jpg

I couldn't make a set for Marvel and not one for DC.  Although I like Marvel more and didn't get around to making any extra pieces for the DC set.  Sorry about that DC.

The set can be downloaded here:
http://host-a.net/dpa09/NagaSkaki_DC.rar

And here's a screenshot:
http://sphotos.ak.fbcdn.net/hphotos-ak-snc3/hs658.snc3/32520_10150212052205534_873120533_13194497_2018006_n.jpg

Thanks for all your hard work!
I've made a page for all the boards and pieces contributed by users:
http://www.mayothi.com/nagaskaki_user.html

I made a set of Marvel Comics character pieces and a custom board to go along with them.

The set can be downloaded here:
http://host-a.net/dpa09/NagaSkaki_Marvel.rar

Here is a screenshot of the characters available:
http://sphotos.ak.fbcdn.net/hphotos-ak-snc3/hs317.snc3/28520_10150207944400534_873120533_13073664_2422210_n.jpg

And here is a screenshot of a board set up with some of the characters:
http://sphotos.ak.fbcdn.net/hphotos-ak-snc3/hs297.snc3/28520_10150207944385534_873120533_13073663_665055_n.jpg

I'm afraid you would need the hex file and a suitable programmer to reprogram it. But I don't think you'll be able to find the hex file, unless someone  cracked it and put it on the web...

Aiwa has the nsx e5m fitted with the erasable programmable IC . how could any one get it revived?

Made a custom chess set and board called Pixel which can be downloaded here:

http://host-a.net/dpa09/NagaSkaki-Pixel.rar

Here is a screenshot:

http://photos-b.ak.fbcdn.net/hphotos-ak-snc3/hs153.snc3/18064_484968850533_873120533_11263155_3252509_n.jpg

For the life of me, I couldn't figure out how to get a horse shape out a 5x5 pattern and then I thought, geez, it's a knight, why can't it just be a sword? 

Okay, yet another custom set.

This set includes the boards named Ammolite, iPhone, Matrix, Othello, Steel and Tile.

It can be downloaded here:
http://host-a.net/dpa09/NagaSkakiBoards-v6.rar

Here is a link to a screenshot:
http://photos-e.ak.fbcdn.net/hphotos-ak-snc3/hs180.snc3/20764_467938135533_873120533_11164005_2693695_n.jpg

I think I've got one more set in me <:

Excellent, I have downloaded it 
Thanks