You should never be influenced by what an old character from the "Wizard of Oz" does! He probably will tell you that he personally invented the nickname "The Jet" to Kenny Smith!
Pretty Ricky lock it up. <object width="425" height="355"><param name="movie" value="http://www.youtube.com/v/BLcGeis-68w&rel=1"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/BLcGeis-68w&rel=1" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object>
People use RA because they're lazy and it's short. "JVG" worked but RA doesn't when you have Rafer Alston on the team. JVG wouldn't have worked if his point guard was Juan Varlos Gavarro. I would recommend RAd, R-Ad or Ricky.