No.
Skull Candy earbuds... yes, Skull Candy headphones... not so much.
They're coming out with some good headphones now. The Aviators are supposed to be good if flimsy, and the Mix Master and SK Pro were well-received by respected audiophiles.
Are you looking for good isolation Rusty Gunn? If you're going to use these on buses and stuff it would be a good idea.
If you're looking for IEMs, you owe it to yourself to http://www.head-fi.org/t/478568/multi-iem-review-225-iems-compared-id-america-spark-ue-super-fi-4-added-02-26-12.
@ below: Which model of Beats? The Solo and Solo HD are absolutely dreadful and measure worse than several $15-20 models I know. The Studio does better there but still a far cry from its price point, and its active noise canceling is both mandatory and ineffective compared to Bose alternatives. I don't know about the in-ears, but I wouldn't trust them. Not to mention every model is way too fragile for the price you pay, made mostly of cheap plastic (with the exception of the Pro, which is metal and apparently too heavy to be comfortable).