Monaco Grand Prix (already happened), top 4 cars separated by less than 2 seconds, one of the best finishes to a F1 race I have ever seen.
Indy 500 just started, if its anything like last years race it should be exciting.
and NASCAR's Coke 600 Marathon race is tonight. Hate all you want racing full out for 600 miles in a 3000 lbs race car takes serious skill.
Its a good day to be a race fan. Post here for any discussion about the races.