My girlfriend was actually duped into seeing Hoobastank a few years ago and it's still one of my favorite jokes she's ever made, such a simple punchline, but so good... "Hoobastank hoobastunk!"
As far as bad band names, I tend to usually hate any band names with numbers in them. 311, Seven Mary Three, Three Doors Down, Matchbox Twenty. They all strike me as so unoriginal. Only exception for me is Sevendust, because it's a word that already exists, and because I do guiltily enjoy their music. Ironically, I used to be in a band with a number name. But it was based off of Linux code or something, so that's all good.
Back in the '90s, my brother and I used to complain about alternative bands just looking for nouns and naming their bands after them. One day, we were looking at things in our bedrooms and coming up with intentionally bad band names. My favorite, a name that I took off a bag of store-bought cookies in my bedroom, was The Fudge-Covered Grahams.