Some crackers in here:
I love Tim Cahill's of course, and I think van Persie's is extraordinary as well - such technique. How to judge though? Zlatan's shows such imagination and James's is wonderful. I tend to think - "could I have done that?" and for that reason goals like Cahill's and van Persie's stand above James's. It is so, so hard to whack in a volley from a long pass over your shoulder with your wrong foot, or to cushion a header like that when everyone expects you to control or volley. Not to put James down at all, but his is slightly "easier" (but still of course majestic) because he received the ball much closer and softer.
Mind you, the goal from the Fulham bloke again Palace was pretty bloody amazing. And the one wrong the lass reminds me of Wrighty, so that is worth extra points too.