Premise: On the darts circuit his nickname is The Excellent Dude, which is a reference from the film "Bill & Ted's Excellent Adventure". He is also known for using Metallica's 'Enter Sandman' as his walk-on music, which he plays air guitar as he enters the stage.
Hypothesis: Entering the stage playing air guitar to Enter Sandman The Excellent Dude got his name from the movie Bill & Ted's Excellent Adventures.