21.   He went on to cut his teeth on a slew of commercials.

22.   Hussam Khader, a maverick Palestinian legislator, cut his teeth politically in the first intifada.

23.   In fact, we cut our teeth as business reporters in the days of the energy crisis.

24.   In the age of creative salary cap skirting, Allen and Whitsitt have cut their teeth in the NBA with the TrailBlazers.

25.   Kasper cut his teeth in the NHL as a checking center, most notably nipping at the winged heels of the great Wayne Gretzky.

26.   Kates cut his teeth working for the feisty, high-quality Boston label, Ace of Hearts.

27.   Jesse Eisinger, for instance, cut his teeth covering companies at TheStreet.com and now writes the Heard on the Street column for The Wall Street Journal Europe.

28.   Many a Lassie cut her teeth on those colorful wood balls.

29.   Now that they have cut their teeth professionally, the new generation should have many opportunities to apply their newly gained experience.

30.   One is grateful to the Classic Stage Co. for encouraging vital young screen talents to cut their teeth in the New York theater.