Hi rastafari. Welcome to the board.
I happen to have a chipped DVD player and like you, the main reason I purchased it was to see the uncut versions of Seagal's (and other stars) films which are normally butchered by the BBFC. I have three of his so far and the one I would urge you to get is the region one version of "On Deadly Ground". It contains quite a few little bits and pieces of violence, absent from the badly censored 15 certificate VHS version available in the UK. It actually contains some of his best aikido, especially in the bar room brawl in Alaska. Also the torture of Hugh is a lot more graphic and there is a fair bit of extra bone crunching during the climax at Aegis 1. Another film which is missing a lot of violence here compared to region one is "Under Siege 2". That would be the two I would advise you to get first. I also have "Hard To Kill", but it is pretty much the same as the version they used to show on Sky Movies.
Finally, I think you are probably better getting a DVD player that is chipped rather than one which can be modified via a remote hack where you type in a code. This is because the remote hack type (depending on the machine) can sometimes only work for a certain amount of times (usually 25) whereupon it locks onto the region of the last disc you have played on it.
The website I get my discs from is called
www.futureent.com
They are quite fast, not that expensive, plus don't charge you for postage or packaging.
Hope this is helpful.
Peace
MMCK