I had the opportunity to try the Full Sail Brewing Slipknot Imperial IPA.  It was a very nice amber with a powerful hop aroma.  It had a strong citrus aroma that was very pleasant.  The bitterness was a little too much for me.  According to the website, this one clocks in at 80 IBUs and 7.8% ABV.   All in all pleasant, but maybe a little too imperial  for a commoner like me.