Some favourites:
Skunk No1
Shishkaberry
Bubbleberry
Big Buddha Cheese (even though I can't smoke the stuff any more, just got killed out here EVERYBODY's growing cheese)
Tahoe OG
Super Silver Haze
Soma's NYC Diesel, AFTER CURING. While drying it smells like something died in the room, I am not kidding. First time I dried my Diesel crop I got very, very worried. It was so strong I almost felt ill. But dried it smells like fruity fuel. Cured it is just an exotic bouquet that I have no words to even start describing it with. This is Second Princess when it comes to smell.
But UNDENIABLY the dankest of the DANK I only came across recently, SinCity LVBK. It is indescribable, kinda like coffee and berries and oldschool Kush all rolled into one is the only way I can approach describing it. If you have a whiff, I can guarantee you will find your eyes closed when you exhale, and you will NOT let it move an inch away from your nose, I can guarantee you will take another deeeep sniff, then another, then another... It is a smooth, pleasing smell like no other. It is truly MAGNIFICENT.