riffs can be something as simple and straight forward as Aerosmth's Mama Kin, a little more involved ala ac/dc's That's the Way I Wanna Rock & Roll; and then there is the classic intro riff to Guns n' Roses Sweet Child o' Mine. Metallica's black album, that is a riff rock record imo, it has picking riffs & power chord riffs; pretty much from start to finish. on a side note, the black album has a great drum sound.

Bon Jovi certainly has the capabilities to do such a record; ie I'd die for you, if i was your mother & unbreakable, to name just a few.