I'd do something that involves using the LCD if that still works. On the other hand, I along with MacJunky and bizzle would probably just dumpster it or toss it up on the Bay for parts.
The enclosure sounds like it's far enough gone that you wont' want to bother repairing it, and who knows what other problems the machine might develop, or what the performance is even like compared to its direct successor in the core1 imac or a powermac g5 with a more-proper bus.
Although apparently the bus in the G5 was incredibly compromised. The fastest G5s had buses that moved data slower than the slowest Pentium 4s. http://en.wikipedia.org/wiki/PowerPC_970#Design
The enclosure sounds like it's far enough gone that you wont' want to bother repairing it, and who knows what other problems the machine might develop, or what the performance is even like compared to its direct successor in the core1 imac or a powermac g5 with a more-proper bus.
Although apparently the bus in the G5 was incredibly compromised. The fastest G5s had buses that moved data slower than the slowest Pentium 4s. http://en.wikipedia.org/wiki/PowerPC_970#Design