I DMed "Wildspace", the first published SJ module, and many more adventures of my own design. The quality level of those TSR Spelljammer accessories was so hit-or-miss in those days. For every excellent "Under the Dark Fist" there was an abysmal "Astromundi Cluster". I think Spelljammer was just a bridge too far for many players--it was hard enough for them to wrap their heads around magic and fantasy, let alone moving it into space. But I'd have to say that no other setting published by TSR captured my imagination quite as completely as Spelljammer did. Those ships that Holloway designed are just gorgeous.