Ok, pizzazzip, show me the smart playlist thing. I stopped using Smart Playlists in iTunes 7 when they broke those, and began recently using them again in iTunes 10 until they stopped supporting the use of smart playlists in the Podcasts app.
Whenever I upgrade iTunes, here's what I do: I open Cover Flow to look for what album's art suddenly disappeared. For example, this time, Candlebox, Norah Jones, and Robert Johnson all, for some reason, lost their artwork. I was surprised, because usually it's about 500-800 of my 30,000 items that lose their artwork. Generally, when artwork that had been furnished by Apple that suddenly disappears in the update, I select all the items that are missing manually, do the "Get Album Artwork" and then it's about 50-50 whether or not Apple returns the artwork or not. In those cases, I select all of the items in the album, do the Get Info thing, do a Google search, and cut and paste the artwork back in. But, after so many updates and losing art, by this point, most of the artwork has been custom replaced by me, so the amount that will go missing next update will be fewer. But as I pointed out, I still lose Apple-furnished art on every update.
I don't mind the Album View over Cover Flow for finding missing artwork. What I object to is not being able to see the artwork when I click a song or (and I can't stress this enough) a podcast.
The art preview was very important to me with regard to podcasts.
Here's another thing that Apple tends to do on update. The album art remains in tact for all items, For example, the Batman score had all of its artwork in tact for all items - except for the first song from the album. It's not until I view it on the iPhone that I discover the artwork is missing. Usually it's the first song, occasionally it's some other random song (like #4 of 16). Cover Flow/Album Art doesn't pick up on these, but they are missing.
If you have a way to use a smart playlist to pick up on those items, I'm all for it, especially if it finds those individual items whose art has inexplicitly disappeared.
You can see why, when iTunes 11 showed up without the sidebar, without the art preview, and without the cover flow, it threw me for a loop.
Anyway, yes, please show me the smart playlist to find the missing album art.