Yep. I use custom Group By fields for all my views. If anyone is interested, here they are:
Group By Album
[Album] [[Year]]Delimit([Description,0],/],/ /[) - [Album Artist (Auto)]
Group By Artist
[Album Artist (Auto)] - [Album] [[Year]]Delimit([Description,0],/],/ /[)
Group By Date
[[Year]] [Album]Delimit([Description,0],/],/ /[) - [Album Artist (Auto)]
Note: I use the Description field to distinguish between different versions of the same Album (ie SACD, Vinyl rip, etc). If the field is populated, it shows up, otherwise nothing is displayed.
Group By DateImported
<font color="000000" size="3" alpha="100">RemoveRight(FormatDate([Date Imported,0], filename), 2)<//font> [Album] [[Year]]Delimit([Description,0],/],/ /[) - [Album Artist (Auto)]
This one has a little of MrC's old trickery. Since I use a black background skin, the imported date is tiny and disappears into the background. If you use a white background, you can change the font color to FFFFFF.
Edit: Just read through the whole thread and realized blgentry already linked one of the threads that uses this trick. That thread is a good one to learn about the intricacies of sort by vs group by etc. It is one of the things that makes MC very customizable and powerful, but it is also very unintuitive. If you are not careful, you can easily make a mess of your views.