Well - what are they? The smokingpipes Top 100 thread got me thinking of just that. Mine are:

4Noggins Bald Headed Teacher
4Noggins Trout Stream
4Noggins Nutty Professor
GH Rum Twist and Brown Bogie

But the main bulk I keep in rotation is....My Own Blend - I call it Flensburger Fjord, from where I used to live up on the German/Danish border. I have it blended with:

3oz Red VA
2oz Toasted Burley
2oz DFK
1oz TBC

Love the stuff.