At first I liked her but her act has gotten old, watch Amy Madigan, I would love to sit on a barstool next to her.
She's tight with Lewis Black, who also has the same act but I haven't tired of that. That's my problem with Gaffigan, that muttering under his breath channeling the audience.
My favorite two now are Bill Burr and Tom Segura. Burr makes me rewind often during his standup and more than any I've watched recently, he really feeds off the crowd and is responsive to what they're laughing at.