1. In a beading magazine, a full-page ad with inch-high letters advertising "SWAROVSKI AUSTRAIN CRYSTALS."
2. On a huge vinyl banner outside the hospital, the word "OCCURED." Granted, this was a banner expressing its condolences to the community regarding the shootings last month, so I felt like a huge jerk when this was the first thing I noticed.
3. A typo in a professor's email signature, which I would usually ignore, except that it proudly declared that he was the "Edito-in-Chief, Systematic Biology" (a prestigious scientific journal).