The TIE Interceptor. Basically a neat way for Kenner to reuse the same old Darth Vader's TIE Fighter body and wing connectors yet again, this time slapping on some new (and frankly enormous!) wings... and yet it works really, really well! The Lucasfilm design for the TIE Interceptor is a thing of real elegance and beauty, IMHO, and the Kenner version cannot help but capture some of that same magic. I do wish they'd come up with something more movie-accurate with respect to the rear of the ship and its clunky battery compartment, but you can't have everything. Make no mistake, this is a great ship and a terrific toy!
On the downside for collectors however, the box it comes in is frankly over-sized and rather flimsy, which makes finding a good one (like Capetown's superb example above) really difficult. Mine's a perfectly respectable example, but like most these days it's a very long way away from being mint, so it's another tick in the 'try to upgrade one day' box! :-D