You're quite correct about the sim called 'Tower'. I don't know who did it or where you'd pick up a copy, but it looked superb with great photo-real backgrounds. Runs on a slow PC too. Bit tricky though, and I could usually only last about 5 minutes before having some serious incident or three!
PS Bagheera - who needs a sim for excitement when (in the old days) you could be working a Saturday using all the runways!!