what are some careers that involve lots of traveling?

Pilot or flight attendant would be pretty well the top ones, since that's basically all you do.

travel agent, flight attendant

That's like asking what kind of jobs involve lots of paperwork. The tip of the iceberg is Travel Agent, Tour Leader, Pilot, Cabin Attendant, Bus Driver, Long Haul Trucker. International Liaison, Military and Interpreter are others that come to mind. www.traveljobsearch.com and monster.com can help you with some discovery as well.

I am in public accounting and I travel up to 50% per year.

Military
Military contractor
Stewardess
pilot
truck driver
cruise line emolyee
rock star or other type of preformer
roadie or other kind of performer "support"
politician, diplomat
aid worker (UNISEF, Green peace, missionary, etc.)
document courier
sales person
fugative
traveling hobo

A companion... Someone who does not want to travel alone will pay the expenses of a companion oftentimes.

Basically any kinda of industry ....
My sister is an account and she traveling up to 60% of the time, too cool, her client are out side of the US and my brother-in-law, goes a couple days later, she takes the red eye, meets the client, then them 2 have like 2 days of going to the beach, sailing, and best of all the company pays for.

Friends are working in a law firm, they traveling meeting other clients.

Any travel agent, even if you are in accounting, they get great deals, hotels ask you to come and take a tour, you listen to there sales pitch and then the rest of the time is yours

any kind of an area supervisor or manager such as a divisional or regional.... they travel to different locations/stores over not so huge an area.any thing to do with flight - attendant etc.military...