Terrific dense 1989 novel from my favorites author of 1979. Didn't catch this one first time around, but it's miles ahead of GARP.
The ALL-CAPS voice of Owen Meany, while at first worrisome because, you know, all caps, is a singular achievement. Indelible character drawn mainly through his voice. Owen is also a prime mover in the passive life of his best friend Johnny Wheelwright, who quietly narrates the novel.
Weaknesses: the "present-tense" narration of the narrator's current spiritual life as an expatriate in Canada drags and drags on.