Once a week I listen to a podcast or two from On Point from WBUR . Recently a surprise... friend Greg Blonder was featured as a barbecue expert along with his collaborator 'Meathead' Goldwyn. Greg really is an expert - he's dived into grilling and other types of cooking wearing the hat of an experimentalist. The show is a bit forced given time constraints, but if you do meat (I don't), you'll find some good tips. At the end there is a bit on vegetables and some of the tips are appropriate for veggies too..
The audio link and some notes are here..