I like cultural theory, tart noir, art that is engaged, popular culture, design, some philosophy. Sometimes I read fiction and 'the classics', whatever they are.
I like books one can start and finish during a flight - OK I live in Australia flights tend to be long - in fact I generally liberate books directly on planes. Small presents for flight attendants.
I like to be able to access translations of books written in a language other than English, and I like to read in Italian, a lot, and Spanish, a little.