"I own you today, baby." Getty Images

With Interleague play commencing, we turn to crossover acts and thus, Kris Kristofferson is all up in your mechanism today!

Interleague play starts today! (Look at this video for a second and laugh. Now, keep reading.) To acknowledge the cross-league battles, we thought we'd dedicate the weekend-long version of "Power Rankings" to the best crossover acts in sports and entertainment. Ya know, ladies and dudes who mastered one field, then moved on to (uh, kindasorta) master another. Number one is pretty obvious, we think; as always, though, we're up for a spirited debate. Or nothing. Really, either can work.