mine would have to be: -
1.) may - misstress barbara 4hour set/ nitrogen room @ godskitchen (never seen a room rock like that for 4 hours straight. it really was relentless!!
2.)november - francois K / firefly @ the bomb
(after mind melting techno, u could just pop into the next room, whilst resting and groove to lottie for a bit....ace!)
3.)september - montana, fergie, marco V @ talltrees, yarm
(now this wasnt the most underground nite, but it was the only chance i could get to see montana. he really is fantastic and underated IMO)
need to go to an atomic jam at some point. the lack of techno in the UK has been very frustrating for me on the back end of this year. although ill be attending atomic jam vs firefly @ the ballroom / notts. i recommend this to any techno lovers. the ballroom is one big RAVE!