I'm not really a coffee guy, I'm more of a tea guy. Starbucks tea is nasty and it really doesn't help that they use low-quality water when you order it in the store (and before you ask, yes I have tried Tazo™ teas made with ærated Dasani™ like I use with the rest of my teas and I still don't like Tazo™). But this isn't about tea, I guess, is it? Well I guess I don't know of any seasonal Starbucks teas.
My wife and I tried the PSL this year for the first time. It was extremely mediocre. Like, it wasn't bad, but there are much better things out there. OTOH, my wife LOVES the creme brulee latte and has been counting down the days until she can get it.
But then we went to a local coffee shop near Purdue this weekend (Greyhouse, for the curious) and they had a non-seasonal creme brulee latte. It was really, really good. It's been a while since I had the Starbucks one but this one was better than what I remember the Starbucks one being.