I used it for a simple American Wheat last summer that was a big hit. I used 10 grams (about 1/3 oz) in 5.75 gallons of 1.045 beer for about 19 IBUs, then tossed in another 14 grams (1/2 oz) at flameout. The lemon flavor was definitely noticeable, but not in an overpowering way. I thought it was great in this application. I haven't used it in any other beer though.
Secondary: Foreign Extra Stout, Cider
Kegs: Bailey's Porch House APA, Winter Wheat (Dunkelweizen), Copper Ale (alt)
On Deck: Bailey's Porch House APA, Vesper Red Rye, Robust Porter