Under construction – more coming soon!
Starwood Preferred Guest American Express (personal apply here, business apply here, pays commission to Rapid Travel Chai). SPG points can be stretched a long way. Not a card worth keeping long-term for most but a good bonus to collect.
Citi® Hilton HHonors™ Reserve Card (apply here, pays commission to Rapid Travel Chai). Annual Gold Status with Hilton, good earn rates, no foreign transaction fees so useful for non-US Hilton spend. Good sign-up bonus, two weekend nights at most Hilton properties after $2,000 spend (excludes all-inclusive and Hilton Grand Vacations, and Waldorf-Astoria properties that do not offer standard rooms).
Car Rental Primary Collision Damage Waiver (CDW)
United MileagePlus Explorer (apply here, pays commission to Rapid Travel Chai): primary CDW can avoid costly claims on your auto insurance, and is a rare card benefit.
Chip-and-Pin (not lame Chip-and-Signature)
Andrews Federal Credit Union GlobeTrek Visa Rewards (product info here, see this FlyerTalk post on how to apply, no commission): real chip-and-pin, great for frequent US travelers to Europe. Laugh at the Americans stuck at gas stations and in lines for train tickets during the next ash cloud. See this intro to the card and this detailed field report on the application process.