This is fantastic. My first game was in GW-BASIC, but I quickly upgraded once I discovered QBasic on DOS 6.22. I also loved the MS-DOS Shell (http://en.wikipedia.org/wiki/DOS_Shell) found on the supplemental disk of v6.22. It felt like multitasking...but wasn't.
I started with the basic of Oric-1, then the fabulous locomotive basic of Amstrad. When I got a PC (1986), I ditched quickly GW-basic in favor of turbo pascal, turbo prolog and later turbo C. QBASIC was not bad, but really too late for me.