In celebration of the tenth anniversary of the series, Nickelodeon will be broadcasting a special viewer's all-time 10 favorites RUGRATS marathon on Saturday, April 21, from 4:30 pm - 8 pm ET/PT. During the months of January through March, the network aired every episode of the series every produced. Viewers were invited to rate each episode on Nick.com. Voter tallies will determine the top 10 episodes. The top 10 will air in order, with the all-time favorite episode airing immediately preceeding the Nickelodeon Kids' Choice Awards. The tenth anniversary celebration is scheduled to climax on Saturday, July 21, when Nick will broadcast an hour-long prime-time special in which the Rugrat's characters travel into the future and become "tweens" for a day. Viewers will get a one-time glimpse of the grown-up characters outside the playpen as they prepare to attend their first concert. A related video collector's edition, which will include the top ten rated episodes, is scheduled for release this summer, as individual episodes and as a two-volume boxed set. A separate volume with the "All Growed Up" episode is also scheduled for summer release.