Troy is an amazing teacher and a guy who clearly loves what he's doing. If you watch his interviews it's almost funny how quickly he'll see things - I remember laughing when Marty Friedman was pulling the "it's not about technique, play what you want to play" bit and Troy pointed out how his DWPS was limiting how he was playing things. Marty was a bit taken aback by it and then when he tried playing arpeggios differently it wouldn't work. He really is full of profound insights into guitar playing. The Martin Miller interview in particular is jam-packed with insights into crosspicking, 2WPS and general playing advice.