Original sentence: The show is notable for Olbermann's fast-paced rhetorical style, historical and pop culture references, ready interjections, and strong opinions, which make Countdown distinctly different from  most newscasts
Edited sentence: The show is notable for Olbermann's trenchant, fast-paced rhetorical style, historical and pop culture references, signature witty interjections, and strong opinions, which make Countdown distinctly different from  most newscasts