Well, we really have big choice to attend any racy. for example BSB, MotoGP or AMA. But it must be told Moto GP has the the most spectaculares events. Recently Indianapolis raceway was in spotlight because of story: (I have written underneat)
This link will halp you to notice recent race day events from all over the world.
http://nickyhayden.org
It will be better if everyone writes down which track day is the best in their memory? Anyway I would like to choose Laguna Seca track day.
It maigt be connected with BSB, AMA, MotoGP & so on.
Waiting for your best track day.
One of the oldest venues featured on the MotoGP calendar, the Indianapolis Motor Speedway reaches an historic milestone on Friday, March 20th. The legendary roadracing location, which will this year run its second MotoGP World Championship race on the purpose-built motorcycle track, celebrates its 100th anniversary in 2009, and has taken the opportunity for a special photo event.