The one's that come to mind are Troll 2 as well, the Super Mario Bros, and Roller Gator. I have issues being able to sit through Riffs that aren't the main 3. For me Super Mario Bros was so bad that no matter how good the riffs were I couldn't sit through it in its entirety. Roller Gator was the more watchable one but there were a good amount of times I almost turned it off. I couldn't take the obnoxious guitar noodling any longer!