Van Hagar is actually what got me into Van Halen. It was seeing the Live Without a Net concert video that did it for me. After that, I bought all the DLR albums, then picked up all the Sammy albums as they came out.
I even have VHIII.
They really were two different bands. DLR era was all fun party stuff. The songs and production were usually pretty barebones, and the focus was really on EVH's riffs. With Sammy, the songs got more complex arrangements and the production got slick and glossy. There were also a more 'serious' songs than with DLR. Of course, the songs were sometimes terribly cheesey, but even the DLR songs were cheesey...but they didn't try to disguise themselves as serious songs with DLR.
The DLR era is my favorite for sure, but I still like a bunch of Sammy's stuff with them.
I'll pick a favorite off of each album.
VHI: Feel Your Love Tonight
VHII: Somebody Get Me A Doctor
Women and Children First: Romeo's Delight
Fair Warning: Mean Street
Diver Down: Little Guitars
1984: Drop Dead Legs
5150: Summer Nights
OU812: Finish What Ya Started (followed closely by Cabo Wabo)
F.U.C.K.: Poundcake
Balance: Don't Tell Me (What Love Can Do)
Best of Volume I: Humans Being
VHIII: Without You
Best of Both Worlds: Learning To See
Of course, for Best of and Best of Both Worlds, I only picked my favorite of the new songs.
You guys have your Star Wars geekdom...I've got my Van Halen geekdom.