Kinetic Energy Absorption: When a speedster uses their Speed Force energy to absorb the speed of oncoming objects; like bullets in mid flight, laser blasts or even other people with extreme skill.
Kinetic Charging: When a speedster uses their Speed Force energy to hyper-accelerate the molecules of any object they comes into contact with, causing an aggressive chain reaction which culminates in an explosion. (Similar to Gambit from X-Men)
Aside from running fast, you can throw lighting, run across water and up buildings, travel trough time and breach to other Earths (Pre-Crisis anyway). Also, nothing can beat that rush you feel when you run.