2000
January
- January 1 - Ozma releases their debut studio album, Rock and Roll Part Three, on Tornado Recordings.
- January 5 - The first online iteration of Karl's Corner launches on weezer.net.
- January 31 - Karl Koch publishes the Weezer Recording History on weezer.net.
February
March
April
May
- May 3 - Weezer records their first rehearsal session after being on hiatus for years.
June
- June 23 - Weezer performs in Fresno, CA at the Fresno State Ampitheatre on the Vans Warped Tour.
- June 24 - Weezer performs in San Diego, CA at the Coors Amphitheatre Lot on the Vans Warped Tour.
- June 25 - Weezer performs in Phoenix, AZ at the Manzanita Speedway on the Vans Warped Tour.
- June 27 - Weezer performs in Las Vegas, NV at the Car County Boulevard Park on the Vans Warped Tour.
- June 28 - Weezer performs in Ventura, CA at the Ventura County Fairgrounds on the Vans Warped Tour.
- June 29 - Weezer performs in Anaheim, CA at the Arrowhead Pond on the Vans Warped Tour.
- June 30 - Weezer performs in Anaheim, CA at the Arrowhead Pond on the Vans Warped Tour.
July
- July 1 - Weezer performs in San Francisco, CA at Pier 30/32 on the Vans Warped Tour.
August
September
October
- October 30 - Weezer records a demo of "Everybody Go Away" in Rivers' garage in Los Angeles.
November
December
- December 27 - Recording on The Green Album begins.
- December 27 - Drum tracks worked on for "Knock-down Drag-out" and "Don't Let Go".