I don't understand why it's considered acceptable for those producing trailers to recycle the same trailer songs and riffs over and over again for different movies. It just feels cheap and tired.

Doesn't matter, I will be there with bells on! I love these kind of
movies. (I may or may not have the best standards for movies). Still.

@1 It's usually for two main reasons, firstly that the trailers are produced, and often start coming out, before the score is complete. So rather than pay extra for original music for the trailer as well they just re-use old music they have the rights too - i.e. the studio's old previous movies.
The second reason is that we tend to associate the scores of good/successful films with quality, so whacking that music onto an unrelated trailer can help to generate a good buzz around a film. Which is why every single fantasy related film for the next couple of decades will have trailers slathered in LoTR's horn section (or a cheaper derivative thereof).
Of course that doesn't stop it also sounding cheap and tired when over-used!

Apologies for the double post, but i hadn't actually watched the trailer when I wrote the previous. And all I can say is "Transformers sound effects?! really?"

Wow, I head better finally get around to seeing Clash of the Titans. This looks pretty great.

I honestly thought the first one was pretty good and am looking forward to this. Sure, the 3D was abysmal, but if you simply watch it in 2D it's a fun movie. It suffered due to its association with the Harryhausen classic.