Question: What exactly is Anthony Kiedis doing on his bed when Keanu Reeves looks in the apartment before the big shoot-out? Is he listening to music, shooting up heroin or (as my pals suggested) is he jacking off whilst watching the woman in the nearby shower?
Answer: He is listening to music and just getting getting really into it.
Question: Near the end of the movie when Utah goes to capture Bohdi in Australia, he looks quite a bit heavier, was this scene shot sometime after the movie was originally filmed?
Answer: Basing this off nothing but a theory, I always thought that sequence was shot first, given his hair length. I surmised that Keanu came in with long hair to shoot that sequence, then got a haircut to shoot the rest of the movie. Again, this is 100% speculation, just my two cents.
Answer: Possibly. But remember when they were telling Utah about the 50-year storm, they said it would be next year. Plenty of time for the character to gain weight.
Question: Gary Busey (Angelo) is supposed to be keeping an eye on the bank, the one that he and Johnny Utah expect the Ex-Presidents to rob. Instead, he is reading Calvin and Hobbes comics and not watching the bank at all. As a result, he doesn't see the Ex-Presidents pull up and enter the bank to rob it. Why was he not doing his job? Is he simply an idiot?
Answer: Probably not an idiot, but perhaps a big disappointment to FBI higher-ups. Having Angelo distracted was designed to make the movie more exciting, but there's a good chance this could have happened (and does happen) in real life. Stakeout work is typically long and boring, and may be non-productive because the agents can't know with certainty if/when (or where) the robbers will show up. After years/decades of conducting boring stakeouts where no-one came or robbers arrived after several hours, agents' experiences may lead them to believe nothing is going to happen right away - it will be a long wait. A false sense of security leads to slacking off, and opportunities for robbers to be more successful increase. While it might be required that FBI agents give their undivided attention on the job - no matter how boring - it is unrealistic to expect that all agents stay alert at all times. Reading comics to pass the time isn't impressive, but being able to laugh is a stress reducer.
Chosen answer: No part of the film was shot anywhere near Bells Beach. It is not even Australia.