The top and bottom ones on my left side came out when I was 23. The bottom one got infected and despite all attempts to save it, it was no-go. the matching top one came out as a matter of course. Something about how they both have to come out if you take one out.
Anyway, the funny thing is, I never bothered to change dentists when I grew up (I didn't have to go often), so I still had my children's dentist. No point in switching since I was moving to Finland soon. Anyway, he gave me some sort of juice stuff, then he gave me the gas, and then novicane. He even put on the Mr. Bean episode where he goes to the dentist. All-in-all that was pretty fun considering I was getting my wisdom teeth out.
I was so inflamed from the infection that getting them out was instant relief. No pain, no swelling, just healed up quickly and went on with life.
A little while later the other two came out here in Finland. I don't remember why the doc suggested it, I think there was a crowding problem in the bottom teeth. Anyway, this one wasn't so fun, but it didn't hurt either. Again, no swelling, no pain, just healed up quickly.
And I'm not one that usually heals up quickly. *shrug*