Putting a few mysteries to rest

I've been receiving lots of questions, and think it's time to clear some things up:

• Anime: The key is what's wrong with a classic elsewhere.
• Anime Redux: I always add Caesar's numbers to my Arabic salad.
• Brawl: I would never die a critic of flags.
• CTF: Instructions to identify the signal are in the post.
• First Linked: Some assembly required.
• Hologram: See above for your key.
• Invisible Man: Alien vs Predator.
• Kryptos: The second part.
• Lava: Did someone comment about bacon?
• Long Live: Binary, ASCII, and keyboards.
• Long Time: The difference in posts may be mere minutes.
• Pigeon: Former home of GC&CS.
• Sharkarantula: Who's calling?
• Show: Bingo! A frozen animation is still an animation.
• Waves: ポリビウス

That should do it for the important ones. Keep an eye out for bonuses, though!