I love the Live at Budokan documentaries. Visually beautiful, and hilarious to boot - even better than commentaries. I bought LAB when I was first getting into the band, I think the docs were part of what sealed the obsession. I remember spending an entire afternoon going through each one consecutively, and getting a bit upset when I knew I was reaching the last one - like when you're nearing the end of a brilliant book. Fantastic.