One major benefit VHS VCRs had over most common DVD players was that it was easy to do TV recordings (the one and only reason why I kept my good old Sony VCR). As the PS3 will soon add optional DVR support this may bring back this benefit and expand on this through better connectivity.
With Sony's PlayTV for the PS3 you can record TV programs, you should even be able to record and simultaneously watch another previous recording on your PS3 or even remotely using a PSP through Wi-Fi. I hope the service becomes a success and lives up to its potential, I am looking forward to this.