Biomechanical Sleeve - Biomechanical tattooing was pioneered by tattoo artist like Aaron Cain and other tattooist in the San Francisco bay area. A breakaway from traditional style American tattooing, biomechanical uses images of the human flesh mixed with machine parts. Basically biomechanical tattoos mix organic images with inorganic images. It quickly became over used.
Flame Sleeve - No clear origins on the flame sleeve but whoever created it should be ashamed. The sleeve is not only hard to look at but is unbelievable boring for the tattoo artist. Flame tattoos are not only a waste of good skin but will also prove difficult to cover.
Random Cool Stuff Sleeve - A twist on the American style hodgepodge sleeve that is acquired over time, the random cool stuff sleeve is acquired quickly. The images often include skulls, flowers, brass knuckles, something with wings,maybe a couple of flames. A newer variation on this sleeve is to get random candy pieces or random kids toys tattooed as a sleeve.