I loved the high-pressure panic'd feel I got while attempting a hack knowing I was moments from being busted. Introversion did a fabulous job here and I'd like to play another game in the same mold.
For those not familiar with Uplink: http://www.introversion.co.uk/uplink/
I've purchased and played through Hacker Evolution [1]. I enjoyed it. The game could be played mostly using the keyboard through in-game command-line interface, which I thought was pretty cool.
However, I doubt anything will ever trump my love and nostalga for Uplink.
[1] http://www.exosyphen.com/page_hacker-evolution.htmlThere are some games/challenges at hackergames.net and more at hackthissite.org
There is a flash game called hacker 2 (and hacker I presume)
best bet is Cypher though.