I just remembered a favorite moment(s) of mine.
My DA Lion. I was killing mobs on Techi4 (I think) with Fan of Knives so fast that people were raging at the mobs disappearing in seconds. My party members were all like "Wtf at that kill speed?!" I practically perfected it to hit all possible targets the moment that skill came out while others were still raging at just hitting 3 at most. Fastest grinding fun I ever had for a long time.