Ah, the lovely beasts in the desert known as Dirt Dragons, Graboids, Screechers, and Ass-Blasters.
What's not to love?
And yes, there IS a TV show that ran on Sci-Fi for around a year or so. It got canceled because it wasn't that popular I believe. I can't remember where I found them online, either, sadly. I'll find them if motivated enough, though.
The TV show was set after the 3rd movie, and it had El Blancho in it (The Great White Graboid). He's a protected species now, and they've actually timed him where he's going to be at every given time. He never leaves the vally, either, which is kinda cool. .. he almost died once or twice. Some stupid government people poisoned him, then he fought this one creature and actually ate it. THEN he puked it back up xD...