I can't believe I just found this. When you go to hire entertainers for The Tops, the one you can hire in Novac is on the run from the Bishop family from New Reno, for stealing from the casino and having relations with Angela Bishop.

I love you, Obsidian. Shine on, you crazy bastards.

Personally I love the reference to the Deathclaw in Modoc from F2, and the wasteland omelet you could buy from Rose the innkeeper.