Colbert Bump: Bob played the Ricky Skaggs album cut "Halfway Home Cafe" on a 2002 episode, and the resulting airplay was enough to get the song on the charts.
Cowboy BeBop at His Computer: An unintentional example with Brad Paisley's "I Wish You'd Stay". On an early-2003 show, Bob announced that the song just missed the Top 10, peaking at #11, and was on its way down. A few weeks later, the song suddenly started picking up again, going on to peak at #7. (The country charts usually have very linear up-and-down runs, as they're tabulated from weekly gains in airplay, so it was very unusual for a song to suddenly rebound after what looked like a clear-cut peak.)
Dueling Shows: The show competes with Bob Kingsley's Country Top 40, The Crook & Chase Countdown (hosted by longtime television personalities Lorianne Crook and Charlie Chase) and CMT's Country Countdown USA (with Lon Helton, a former executive of Radio & Records, plus a different singer as a Guest Host every week). Previous competitors included The Weekly Country Music Countdown and The Foxworthy Countdown, hosted by comedian Jeff Foxworthy.
Executive Meddling: Kix cut the show down from 40 to 30 (although it remained a four-hour show) because program directors were supposedly "uncomfortable" with the songs in the 31-40 range. Apparently this was easier than the directors adding said songs to their playlists. (The show has since reverted to 40.)
The Pete Best: Original host Don Bowman, whose work on the show has become all but forgotten, since shows have not been rerun and the better-known tenure of Bob Kingsley, the producer-turned-successor host, became associated with the show's success.