Okay. Chronologically, by album:
'Van Halen': "Eruption"
'Van Halen II': "Spanish Fly"
'Women and Children First': "Tora! Tora!"
'Fair Warning': intro to "Mean Street" (not a stand alone solo, but hey

)
'Diver Down': "Cathedral", "Little Guitars (Intro)"
'1984': "1984" (keyboards)
'
For
Unlawful
Carnal
Knowledge': "316"
'Balance': "Strung Out" (creative piano playing), "Baluchitherium"
'Van Halen III': "Neworld", "Primary"
ENJOY
You might also want to go to vhnd.com and download the 2 mixes created by Roland Chayer which feature much solo stuff creatively combined into interesting montages.