Hey I'm a racing junkie too... I'll watch almost anything race.
Even those riding mower races can be pretty close, and entertaining in their own right. My only objection comes when I see something that's called "Dirtbike Racing" when in fact it's some lesser, "Fooper" version of itself...
I like all kinds of motor racing, just don't tell me "dirtbikes" and then give me "lawnmowers".
The 2005 races are much more exciting than the 2012 ones becasue everything about racing has had to be dulled at the edge to allow for the farty, mushy machines. To me, it just doesn't add up to the best of racing, and the "Mushy Million" doesn't make it any more exciting.
100% 4 Stroke racing sucks.