A little more than borrowing

In the past 24 hours, I've noticed two egregious cases of new music ripping off older music. You can decide whether I'm attentive or insane:

1. "No Phone" and "Take It All Away" by Cake (tracks 2 and 3 on the player). Both of these songs steal the guitar hook from the 311 song "Amber".

2. "Adelaide" by Ben Folds. This song is good, and it sounded familiar. Then I realized it's just variations on the theme from the Dwarf Castle in Final Fantasy 2 (or Final Fantasy 4, if you're Japanese).