I love a lot of my Harbor Freight stuff. Granted I have never bought anything major from there. Some of my "larger" purchases were:
Pry bars (have worked great and keeps me from snapping the tips off of my Craftsman scredrivers...

)
Engine support (spans fender to fender, worked great for dropping the transmission out of the neighbors Taurus)
Air Grinder (have not oiled the thing once since I got it 2 years ago and still works great)
Bungee cords (I usually lose/give them away before any break, have not had one break yet)
Ratchet Straps/Tie Downs (have worked great so far... Seem to stick a bit when trying to release them. Only ones that broke were user error (rubbed on the edge of a chrome bumper and it cut through them).
Tarps (no heavy duty use, but have worked great for lining the car trunks/interior to keep dirty parts from staining)
Mini-sledge hammer (can you really do too much "wrong" with a hammer? Has worked great)
That is kinda a "highlight" I have gotten things like zip ties and cutting discs for the air grinder, fuses and wire, but the above are the more "major" items.
Hell, my Craftsman $200 aluminum racing jack is (or at least was at one point) made by the same company that made the $99 Harbor Freight one. Also, just got a small rolling stool for Christmas that is a Craftsman, and looked at the one at Harbor Freight for 1/2 the price and it is a DEAD RINGER of the one I have (minus the Craftsman logo). So not everything is "junk", it might be exactly the same as the name brand stuff.