What is there to do at night when you're 18 years old near Portland OR?

What is there to do at night when you're 18 years old near Portland OR?
From time visiting there about 5 years ago, I think Portland has a lot of music and other clubs that 18-year-olds can get into (some are 21-only). There are evening and night events going on all the time around the various colleges in town, too (performances, shows, art exhibits, etc.). Then there are movies, bowling alleys, and "hanging out" in the town's various nice neighborhoods.