I used to listen and still occasionally do listen to Less Than Jake. When the Warped Tour was in its prime it was awesome paying like $20 to go to an all day concert and see dozens of punk and ska bands. Less Than Jake, NOFX, and The Suicide Machines put on a hell of show. Sadly the Warped Tour has turned into an ugly beast since the 2001 show and there's more cookie cutter poppy punk bands than anything now.
I remember at the 2000 show I met Roger from Less than Jake at his booth where they were selling shirts and stuff, I was wearing a Pac-Man shirt and he said "Cool shirt.", I realized who he was as I turned to him and talked to him for a bit, then he invited me inside this little tent they had set up for the roadies and crew and we sat down and talked for like an hour about all kinds of shit, mostly games, while he kept handing me Gatorade bottles, due to the 104 degree heat, he seemed like a really cool guy.