4) Refusing to Listen to the Only Living Jedi in the Galaxy
Luke gets a vision of his dead mentor Obi-Wan telling him to go to Dagobah to get training from the Jedi Master, Yoda. Luke obeys, goes out to Dagobah, finds Yoda, and then proceeds to ignore him at every important turn. Yoda tells him not to go into the scary cave with weapons, Luke doesn't listen. Yoda gives him a lesson about overcoming great obstacles, and Luke doesn't take it to heart, can't lift his own X-Wing and gets all pissy. Yoda and the Ghost of Obi-Wan both tell him not to go running off to Bespin to save his friends as he's going to endanger everything they fought for. Luke doesn't listen, goes off to Bespin, helps nobody and gets his damn hand chopped off.
5) Trusting the Force to Help Him Blow Up the Death Star
I have never really figured out what was so special about Luke using the Force in attacking the first Death Star. As far as I could tell, it did nothing but give Darth Vader a slightly higher level of difficulty in blasting his X-Wing, which he seemed to aptly overcome as he blew up R2-D2, and proceeded to almost blow the crap out of Luke's X-Wing had Han Solo not saved his ass with the Millennium Falcon. Some might say his use of the Force involved him turning off his targeting computer and trusting himself to shoot the exhaust port. If that's using the Force then I am using the Force every time I turn off my cruise control in my car. I mean, they make targeting systems for a reason, Luke--and chances are, the Rebel's would prefer to trust your X-Wing's highly sophisticated on-board computer than a mystical power you spent a few hours learning yesterday afternoon.
And the rest are at the original site.
If you need more of a Star Wars joke fix, try here too: On the Implausibility of the Death Star's Trash Compactor. And let's be honest, that one was just a reprint from here.
Yoda had seen this coming. Anakin, the destruction of the Jedi order, etc. Not exactly the most pro-active guy. Sitting and meditating didn't seem to help things at many critical points. In Luke's defense, maybe a more hands on approach was a better strategy. (Except for having the hots for his sister.)
I always saw the "trust the Force, Luke" thing as an anti-technology, you have to have faith, there's something bigger than yourself kinda woo-woo. A bit ironic in a science fiction movie. Considering that Lucas rewrote the Force to being caused by alien bacteria getting orders from stars, what does that make Luke's trust in it? Maybe the stars were jealous of a man-mad Death STAR - a kind of cosmic Babel? Hmm - never thought of that before, but then again there was never a reason to. Sheesh.