They're saying: Likable, heartfelt, slow-going initially.

Most acting praise for Jason Segel, as Signs-obsessed lead.

http://www.firstshowing.net/2011/toronto-review-duplass-brothers-comedy-jeff-who-lives-at-home/?amp%3Butm_campaign=FlickDaily.com
It was an enjoyable ride. I laughed quite a bit, mostly at Segel's amazing delivery of almost every line, and enjoyed where the film ends up. It's a wacky but amusing journey that the Duplass Brothers take us on, but is packed full of moments that actually make you think, make you wonder whether you're missing the signs of destiny and need to take another look at your life.

http://www.screendaily.com/reviews/the-latest/jeff-who-lives-at-home/5031915.article?referrer=RSS
The Duplass brothers make a quirkily delightful leap into the almost-mainstream with Jeff, Who Lives At Home, a charmingly oddball gem of a movie that is funny, tender and ultimately moving as takes a fresh look at family and relationships.

http://toromagazine.com/features/tiff/tiff-11/daf527c8-5d10-64b4-adb1-2686d931042d/TIFF-11-Day-3/
The Duplass Brothers are known to make decidedly unhurried movies, but Jeff is a quick and busy story, with more emotional highs and lows (and gut laughs) than they’ve ever reached for. A strange mix of their own sensibility at the speed of Judd Apatow with a lot of whimsy, Jeff is every bit as earnest and loopy as its title character.

http://www.boxofficemagazine.com/reviews/2011-09-jeff-who-lives-at-home
A family drama that looks for answers in coincidence (is it really ever coincidence?), this endearing and breezy comic fable watches Jeff's coming of age and promises nothing after his moment of truth. Some might feel shortchanged by this but most will be too charmed to notice. Jeff is bound to attract attention, popularity, affection and box office dollars in spades.

http://www.indiewire.com/article/2011/09/10/toronto_review_the_duplass_brothers_jeff_who_lives_at_home_is_secretly_bett
“Jeff, Who Lives at Home” is another fascinating, occasionally transcendent example of the Duplass’ unique ability to infiltrate Hollywood cinema with their brand of filmmaking techniques. While unquestionably a lesser effort by their standards, it nonetheless manages unexpectedly satisfying results.

http://twitter.com/#!/scott_tobias/status/112662670712377344
Jeff, Who Lives At Home (Duplasses, C) Segel/Helms take this wisp as far as it goes, and where it goes is one dopey deus ex machina.

http://twitter.com/#!/akstanwyck/status/112654104421085184
The Duplass Bros' Jeff Who Lives At Home is an amiable family drama that ends up in a good place but takes its time getting there.