Spelling and Grammatical Pet Peeves

I was watching The Middle last night and within the episode there was a discussion about using the proper spelling of a word. During this same episode some of the things that were said were grammatically incorrect. This got me thinking about the spelling and grammatical error pet peeves I have. I'm not going to say I'm perfect and don't make any mistakes, but I definitely make a lot fewer mistakes than the majority of my generation, and the current generation. It's quite sad actually. I fear for our future, as texting has created a large spelling impediment upon our young.

Well due to this episode I watched last night, I thought I would list a few of my pet peeves. You are welcome to add to this list in the comments.

1. There, Their and They're  (This was the word that was mentioned in the tv show I watched last night)
2. To, Too and Two
3. A, An (If you don't know which is the correct use in a sentence, I've found that if it rolls off the tongue it's probably the correct use. Say out loud "I'll see you in a hour" and then try "I'll see you in an hour". You'll hopefully see what I mean).
4.Got versus Gotten (gotten isn't a word people)
5. Ate versus Eaten (Watch how you're using this. Although I am guilty of using this incorrectly a few times, I do try to catch myself).
6. Whether and Weather
7. Which and Witch
8. Picture and Pitcher
9. Your and You're (This is probably the worst one! Really people is it that hard to know which is which in your sentence?!)
10. Then and Than
11. It's and Its
12. Are and Our
13. A lot (not Alot)
14. Do and due

I'm sure I will think of more, but this is what I've come up with at the moment. Feel free to add to the list.