Free companion flights? Seems pretty sweet

Citi Platinum American Express

With no annual fee the first year and $125 each year thereafter, the cardholder is entitled to free companion flights (unlimited) so long as the flight of the cardholder is booked through Amex's travel services. Basically, all you can eat buy one get one free flights! Sounds good on paper but who knows how much the flights cost through their travel services.

You also get access to airport lounges at most airports.