(1) He's a crackerjack at technical innovations.

(2) Hellstew. Stand back and watch a crackerjack chef at work.

(3) Mama was crackerjack of a business woman. The kind that'd make money if you let her down a well.

(4) It was a crackerjack legal circus, with spectators getting in line at four in the morning, despite the subzero temperatures, to assure themselves of a seat.

(5) On the one hand, Australia's crackerjack fit with the Chinese economy is reshaping Australia's trade and investment flows, drawing the country into a China-centred Asian orbit.

(6) You may be a brilliant developer, a highly skilled net admin, or a crackerjack DBA — but if you’re unprofessional, your career is likely to fall short.