Jake Gyllenhaal dropped by a friend's house outside LA yesterday in a perfectly fitted tee. He's back on the West Coast following a quick trip to Hawaii over the weekend. Jake and his sister, Maggie, joined their father, Stephen Gyllenhaal, and Kathleen Man at their Oahu wedding. Jake's brother-in-law, Peter Sarsgaard, missed out on the beach nuptials due to work obligations, since he was around the globe at a Green Lantern premiere with Ryan Reynolds in Germany. Jake's now back to keeping up his strict fitness regime for End of Watch. We got a peek at Jake's ripped muscles recently, when he joined Man vs. Wild host Bear Grylls on a glacier and volcano hiking tour through Iceland.