Father’s day is nearly upon is, and T-Mobile wants to help you celebrate. On Saturday, go visit your local T-Mo store and pick out any phone they’ve got for free – all you’ve got to do is switch to a family plan, or add a new line.  Now's your chance to get your hands on that shiny new myTouch Slide, or maybe your Dad has had his sights on the Garminfone.  Either way it’s a great deal, but be sure to check to see if your local store is participating before you ambush them. [via T-Mobile]