One of the most painful is Chile for US citizens. They have a "reciprocal visa charge", which is a one-time $60 (or so) charge to enter the **** country. Payable only in dollars and only in cash. Good thing is that once you pay it, that's it. Unless you lose your passport or the visa, I guess. Then with each entry and exit, you pay about $20 exit tax. Being a developed country (somewhat, I suppose), they do include this in the price of a ticket, but not the reciprocal charge.

Places with exit taxes included BKK, HKG, DPS, CUR, and LIM. I can't remember if Hungary or Venezuela did or not, and I have been told that Cairo does. Haven't been there, yet. I have been told that sometimes HKG includes it ($50hkd, or $7usd), sometimes not. In my case, it was not. Lima *never* includes it, and is about $25 for international and $10 for domestic. Curacao is around $20, and Denpasar is a whopping $5. I really don't remember BKK, but I think it was 500 baht or about $13.