What to TiVo: Saturday

Fox has Nascar coverage
NBC has repeats of "Dateline," "Law & Order: SVU" and "Law & Order"
CBS has repeats of "Cold Case" and "CSI" and is new with "48 Hours Mystery"
ABC has NBA playoff coverage
The CW has "American Idol Rewind"
VH1 has a marathon of this season of "America's Next Top Model"
MTV has repeats of "Run's House" and "Real World"
FX has a repeat of "The Riches"
Late-night highlights include a new "Saturday Night Live" on NBC with Molly Shannon and Linkin Park and a repeat of "Mad TV" on Fox with Mary Lynn Rajskub