Your brain's still working fine - don't worry. Having just been through the LCCT in KL there's two Plaza Premium lounges - a small one before passport control and a larger one after passport control (they back onto one another, so basically it's the one lounge with a wall and kitchen area between them).

Given the chaos of the main terminal area after passport control, due to a number of delayed flights, it was nice to be able to wait in the lounge. Can't say it's worth the RM118 I think they were asking, but they accept Priority Pass cards so that made it worthwhile for me. A few internet terminals are there, along with the usual comfy chairs, mediocre snacks and somewhat basic toilets and showers.

There's no flight announcements or update screens in the lounge, so in the event of any delays you'll need to wander into the main terminal to find out what's happening.