Just to carify the reviewers earlier comment.
"Note (and I could be wrong here but I don't think I am) those peaks aren't anywhere near part of the ski hill itself."
The peaks (Mt Shuksan) is near the resort. There is back country access to Shuksan arm, the ridge leading to the mountain, at the top of chair 8. As for the peak itselk, nobody skis the hanging glacier.
You can hike/skin to many peaks (Table Mt, Herman, Shuksan Arm, etc) from the resort if you adhere to the mt policies. Mt Baker proper isn't one of them.