Colleen Wheeler sits in the large and useful category of working actresses, a name found in the middle of a cast list more often than on a poster. The pace has held: roughly a credit a year, and often more. By now the career is long enough to have its own shape. Ask about the work and 'Tully' comes up first, and Dr. Smythe with it. She turns up in 'The Tall Man' as well.