Arrowfest. The event consists of 24 different technical seminars during the day (you pick 4 you are interested in) and a tent exhibition with vendor booths, free swag giveaways, drawings for prizes, free food, and yes free beer (And a handy Arrowfest Glass Mug to put it in.)
My wife gives me a bit a grief for continuing to fill our kitchen cabinets with Arrowfest mugs (I think I am up to 10 or 11 now). They make great beer & coffee mugs though!
The Exhibition Tent is worth wild as well; there were booths from more than 85 different electronic component manufacturers and sales representatives all showing off there latest and greatest products. The big guys Texas Instruments, National Semiconductor (aka Texas Instruments), Linear Tech, Analog Devices, Altera, Freescale, Atmel were there along with many other manufactures. They were also handing out a ton of SWAG!
I don't make it up to too many training seminars nowadays, but I always try and make it up to Arrowfest. It is great getting all the reps and manufacturers under one roof and I always run into old coworkers or friends in the industry. Plus a few years ago I got to meet Bob Pease at my local Arrowfest (Very Cool!) ...... I met Dave Van Ess at Texas Instruments Tech Days a few years ago too (a very close second, Very Cool!)
And just in case my Boss is reading this blog post... Yes I did find some cool stuff we could use on future products and I got a few pending questions answered... Thanks for paying for my gas :)