Oooh, $1000. Well, I'll go through my fav lenses and toss in a pic that is a good representation of the lens.
Pentax F50mm f1.7. Goes for under $250, (I paid $200 for mine) and has absolutely beautiful color rendition, sharpness, and it's a lovely lens to use. I get more keepers from this lens than from any other.
DA55-300. You can get one used for $210 or so. This is absolutely essential for some things. Like the zoo, for instance. I love this lens, it is nice and sharp and renders well. It's also very good for portraits.
Promaster AF 100mm f3.5 Macro. (Or Pentax FA 100mm f3.5) Make sure you get the matched macro adapter with it. This lens is remarkably sharp, even when you're not shooting macro. I've shot stage performances with it, f3.5 lets in a reasonable amount of light for that kind of reach. I've also used it for street photography. Really shines, and is 1:1 with the matched macro adapter. You can snag one for $150 if you wait and watch eBay. The Promaster version generally goes for less than the Pentax branded, but they're identical.
Tamron 28-75mm f2.8. You need to test these in an actual store, or be prepared to send bad copies back and wait for replacements. This lens in particular suffers from front focus issues, but if you get a good one, it's absolutely amazing. Very, very sharp. But heavy. Still, it's a very, very useful range to have. Goes for $400ish new.
Phoenix 28-210mm. It's $130 for a superzoom. It's not at all fast. It's made of plastic and it feels cheap. It has some purple fringing. But it's very inexpensive, quite sharp, and has stunning, saturated and vibrant colors with excellent contrast. I paid $45 for mine, which I considered absolutely amazing, but $130 is still a good price -- IF you need a superzoom. There are better lenses out there, but if you need a slow superzoom, this is what I'd recommend.
Charles.