Often intersecting with dadrock, VH1-core can be described as any artist that's practically worshipped on a VH1 special, such as I Love the 70s/80s/90s, or any Top 100 countdown. Bands in this genre often have merchandise sold in any and every popular clothing store.
Fans of VH1-core are people that listen to the most popular music from an era without realizing that the era (such as hair metal or grunge) is dead, there is still good music being made nowadays aside from the same ten artists mentioned, and that it can be found if they actually bothered to look for it instead of listening to the same rock radio stations until the end of time.
Though VH1-core is not synonymous with dadrock, many dadrock bands are revered by VH1 programming, inciting the comparison. Modern bands referred to as VH1-core can include Foo Fighters, Rob Zombie, Marilyn Manson, The White Stripes, Wolfmother, Audioslave, etc.
Related terms include JCPenney-core and Guitar Hero-core.
Person A: "Oh, man, I love music! I'm really into Led Zeppelin, Nirvana, The Clash, Guns 'n' Roses, Bob Marley, Audioslave, the list could go on..."
Person B: "Sounds like typical VH1-core."