What's the name of the 90s kids show that had an orange monster; opening theme was 'ain't nobody here but me"?

i believe it was a show similar to alf, but it had an orange monster that wore sneakers living with the family. also, i think the opening theme was a man playing a banjo singing, "come on in, ain't nobody here but me." nobody i ask remembers this show, i'm startin to think i'm slightly insane