The Top 40 hasn't host to introduce the music videos, and it hasn't opening or ending credits. It only broadcasts the music videos in countdown without pause or commercials but a brief channel ident promo each 20-30 minutes. In addition, it shows titles (solo singer/music band, song name and album name) at the start and ending of each one, and its number in the countdown.
Jay-Z is featured twice in the countdown: Jay-Z: 99 Problems (2004) and Rihanna Feat. Jay Z: Umbrella (2007).
Despite to be a Top 50 set in the 2000s, it features a 1999 song/music video: Mary Mary: Shackles (Praise You) (1999). It was included despite to be released in that year because it reached the top chart in 1999 and also in 2000, or it didn't reached the top chart in 1999 but in 2000.
Justin Timberlake is featured twice in the countdown: Justin Timberlake: Like I Love You (2002) and Snoop Dogg feat. Charlie Wilson and Justin Timberlake: Signs (2005).
Kelly Rowland is featured twice in the countdown: one as part of a music band in Destiny's Child: Emotion (2001) and the other as solo artist in Nelly Feat. Kelly Rowland: Dilemma (2002).