Ooh, you're right, I do likey!
Sure thing. I'll do them in batches of 5 or 6 at a time. Here's the first.
+3 Cheeseburger: So only the target can see the burger? And the duration doesn't make much sense, considering that it doesn't line up with the duration of the effects in the description. A suggestion for changing the spell would be to have it create the burger, and anyone who sees it feels the compulsion to eat it, and must will save against the compulsion. If two or more see it, then they will both do what they can to get it, within what their personality would be normal, whether fighting, bartering, stealing, or what have you. The burger remains until eaten or the duration expires. Also, what classes can cast it? It's level 4, but no classes are mentioned.
A Cat's Revenge: Very kitteh magiks! Good spell.
Aggressive Cat is Aggressive: All I'd want to add is if you don't already have claws, you grow some. For a medium creature, it would be d3 damage. If you do have claws, they grow bigger, dealing damage as if you were one size bigger.
Basement Cat: Very cool and thematic. I like!
Big Kitty: Ooh, very nice 9th level spell, with it having a swift casting time.
Cat Gravity: Another spell that needs to say what spell lists it's on. Since it's a self only buff, there should not be a saving throw line. Adding your CL to grapple checks is nice, but since it's only good for offensive checks, it's definitely not worth 7th level. I would put it at 4th level, or maybe 3rd. Also, I initially thought that the spell would not function until after the cat had pinned someone, because while the first sentence is obviously flavour text, the second is not obvious. A little rewording would probably fix that.