Sean Penn Scarlett Johansson Hooking Up?

Is ScarJo doing Spicolli? Reps on both sides deny it, but If all the tabloid reports are to be believed, Sean Penn is the fourth guy Scarlett Johansson has hooked up with since her split from husband Ryan Reynolds last December. Scarlett, 26, and Sean, 50, are both freshly single (Sean ended his 14-year marriage