My cousin used to work at SNL but she quit (?) awhile ago. But she knew/knows all the cast members and such. I did actually go for a show once and we were able to skip waiting in the really long line outside. But I doubt she can still get tickets and I have no idea if she still hangs out with any of the cast members.
It was a great experience. Little bummed that I didn't get to meet any cast members (which one of my relatives did). Tickets will be really hard to get now and you'd probably have to actually know a cast member to get tickets (my cousin worked in production and even she wouldn't have been able to get it this quickly)