Yeah, there's a huge scene in Tokyo. It's a bit confusing though. Most clubs have different parties on different nights. What you need to do is find an organizer and/or DJ you like, and figure out where their next party is. You can also check the schedule of the place.
Liquid Room isn't a club though... it's really a concert hall for DJs (and sometimes bands). It's big, and expensive. Usually 4000-6000 entry fee. Here's some other clubs... some have been around for ages, others haven't.
Maniac Love This is the cat's meow, and is pretty hardcore. VERY small, claustrophobic, and smokey. Yet, the after hours party (5Am to 10AM Sunday, and now Saturdays I hear) is the place to be. The Saturday Night party is pretty harsh techno/minimal so if you're into that "glittery" techno, wait until about 5AM to show up. My personal favorite of the Japanese DJ's is
Shinkawa. He plays at one after hours party a month. Monobe and Yo-C are also very good, and very cool people as well. Monobe is into games, so we usually have something to BS about at clubs. Crossover is a CIA Japan party that he DJs at. It's one of the old school parties I went to, and was where my wife and I had our first "date" so to speak. It and the Maniac Afterhours are the only two parties that are still around from "the old days" but Crossover has switched locations half a dozen times it seems.
CIA Japan is run by a guy that throws quite a few parties. Despite the fact that the owner is American, there's no English on the website. :/
Womb is a pretty damn big place. I'm not so big on it, but it's okay. The visitors leave a bit to be desired. Events vary, but they have an informative website.
Air is another club, much smaller than Womb but quite a bit bigger than something like Maniac Love. My friend organized Joey Beltram's tour, and he played here. It was nuts packed, but a great party. I like this place, although the name of it is a bit misleading. :/
Ageha is a MASSIVE club out in Shin Kiba. You have to take a bus, or a 6000 or so yen cab ride to get there. Stupid idea to put it out so far, but oh, well. They have some good shows.
Mainline Music is a booking agent a very close friend of mine runs. It started out when he lived in Japan, booking foreign DJs in Japan. He does the same thing now, but from the UK. He's bound to have a schedule up. He only brings well-known DJs. The good side, is I get to meet them all... that's how I got the translating gig below.
Jeff Mills is pretty big in Japan but....
HUGE. I actually translated for him in
Kyoto ages ago. Got to see a free show.
Yellow in Nishi Azabu is another but couldn't dig up there website. It's the first real club I was exposed to... ages ago, on my study abroad.
There's another club in Roppongi (huge) that I wont' mention b/c I think it's garbage. Sometimes okay music, but strippers and salarymen are the main clientele. No thanks.
That should keep you going. Some things you should note. Times have changed. Expect a body search on the way in (varies in degrees) and expect to be ejected if you're found in a toilet with someone, regardless of what you're doing. Some places, like "that place" in Roppongi have Guardian Angels standing outside. Even a city like Tokyo has some people that can't find anything better to do than pretend to do the police's job.