I took this course in 2010, thought it was awesome, and thought every experienced rider should take it, regardless of what they ride - the skills acquired and knowledge gained can benefit all street riders.
If you want more info on it, here is the FAQ that UglyDogRacing posted a link to in the "ABATE Intermediate vs Advanced rider course thread".
The "ARC-ST" is now supported by CDOT's MOST (Motorcycle Operator Safety Training) program, meaning that CO residents save $45 over non-residents (cost is $105 for residents vs. $150 for non-residents).
As of this writing, ABATE has 5 of these classes scheduled this year, including 3 in Ft. Collins and 1 in Co Springs... but the first one of the year will be in the Denver Metro area, at Red Rocks Community College (in Lakewood/Golden) on 4/01.
UglyDogRacing (MRA #29), KFinn (MRA #28 - formerly #173), and I (formerly MRA #24) will be instructors for the course at Red Rocks Community College. Come learn from one of your own!
Space is limited (as of this writing, there are 9 spots left). Click here to sign up.