Wireplay was brilliant. My parents wouldn't cough up for an ISP subscription, so my only use for my 56k was Wireplay's 2.5p/min service. Quake II CTF, Jedi Knight, Air Attack, Unreal. Hard to believe it was over a decade ago.
I finally got on to the proper net in August 98 with an AOL trial, which I changed to Freeserve when it launched, and tied up the house landline for ages playing CS and Ultima Online. I still remember how chuffed I was when NTL World launched and my mum agreed to subscribe to it and install a second phone line, as they were much cheaper together than paying per minute. Adding my dialup connection to the computer's startup folder felt like a day of liberation.
Does anyone remember that terrible 0800 ISP that installed an ad banner on your desktop? Neat idea, but getting logged in was a nightmare.