Saw Sons & Daughters support at Stirling Albert Halls in 2006. Easily the best band I've seen support him. Doll & The Kicks were the support in 2009 at the same venue, thought they were okay but a little too gimmicky. Saw Sack a couple of times but always thought they were rubbish(pun possibly intended!!). Nearly saw The Dead 60s at Edinburgh Corn Exchange in 2004, but it was a shambles trying to get into the venue that night. There were still people outside when Morrissey took the stage. Kristeen Young seemed to pass by unspectacularly.
Going way back, saw Easterhouse(with Craig Gannon) support The Smiths at the Edinburgh Playhouse in September 1985. They were pretty good, but my abiding memory of their performance was one of the guitarists(don't know if it was Craig) give an aggressive two fingered gesture to someone in the front row. Don't know if they shouted abuse or threw something, but it didn't go down well.
Don't have a problem with the video show 'support act', it depends on the songs. I seem to remember that the shows around 2006 had both support act and video show, the videos beginning almost immediately the support act left the stage.