I have plane-spotted at the following airports:

In New England

Boston Logan, Providence T. F. Green, Manchester NH, Hartford Bradley, Portland Jetport, Worcester Regional, Groton

In New York State

Albany, Westchester County, LaGuardia, John F. Kennedy, Newburgh Stewart, Poughkipsee, Long Island MacArthur

In the Mid-Atlantic states

Newark Liberty, Atlantic City, Philadelphia, Baltimore-Washington, Norfolk

In Florida

Daytona Beach, West Palm Beach, Fort Lauderdale, Miami

And in the rest of the United States

Detroit Metro, Atlanta Hartsfield, San Francisco, Seattle-Tacoma, Las Vegas, Los Angeles, Boeing Field, Saint Louis

I have also flown to/from these airports:

Cincinnati, Cleveland Hopkins, Charlotte, Raleigh-Durham, Washington National and Dulles, Minneapolis/St. Paul, Toronto Pearson, Montreal Dorval, Madrid, London Gatwick, Munich + others I don't remember

Airlines I have flown on:

U.S. Airlines:

American(AA), America West(HP), Continental(CO), Delta(DL), Kiwi Int'l(KP), Midway(JI), Northwest(NW), Southwest(WN), Spirit(NK), US Airways(US), and Valujet(J7)

Int'l Airlines:

Virgin Atlantic(VS)
 

Aircraft I have flown on:

B-727-200, B-737-200/-300/-400/-700/-800, B-747-100, B-757-200, B-767-300, B-767-400, A-319, A-320, DC-9-30, DC-10-30, MD-82, MD-83, MD-88, DH8, F-100, CRJ, FRJ, L-1011, Cessna 152, 172