• This song won a 2002 Grammy Award for Best Hard Rock Performance.
• The song is rumored to be about Crystal Meth addicts who feel the sensation of insects 'crawling in their skin' when using. People who suffer from panic attacks is another popular theory.
• According to Chester (RollingStone 2002) 'The song is about taking responsibility for your actions. I don't say 'you' at any point. It's about how I'm the reason that I feel this way. There's something inside me that pulls me down.'
• The music video was directed by Brothers Strause and revolves around a young womans abusive relationship. The woman is played by Italian/Norweigan model 'Katelyn Rosaasen'.
• Chester Bennington, Mike Shinoda, Rob Bourdon, Brad Delson, & Joseph Hahn share writing credits on the song. Don Gilmore produced the track for the album 'Hybrid Theory'
• A remixed version of this song makes an appearance on the album 'Reanimation'. It is titled 'Krwlng'.
• The single was released in April of 2001 and peaked at #5 on the Billboard Modern Rock Tracks chart & #3 on the Billboard Mainstream Rock Tracks chart. It also peaked at #74 on the Billboard Hot 100 chart.