Pros
BGC employs some great people, and there is a true camaraderie that makes it an enjoyable work atmosphere. The firm has solid branding, and a good name in most (but not all) of the markets it serves. The annual charity day to honor the victims of 9-11 is something to be proud of, and energizes the entire company.
Cons
Watch your back. Management will protect the "good old-boy" to a fault, and very adept at screwing people over on pay-outs, account coverage, etc. The big push to convert everybody over to the new partnership structure is a scam....and you forfeit all your money when you leave. And that was SUPPOSED to drive the stock price up? And the more you make, the more your benefits cost....outrageous percentage covered by the employee.