Has happened to me twice, both within one week. One time, landing in PIT. We were within a few hundred feet of landing when suddenly the pilot pulled up violently and I felt like we were zooming off like a spaceship. Turns out the plane before us had not cleared the runway as fast it should have.

We circled and came back to land in another 15 minutes. The other time, four days later, was not quite as violent.... It was an interesting experience, and as posted, I'm glad I was in the air rather than on the ground running into another plane!